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Claims  |
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What is claimed is:
1. A tone signal generation device, comprising:
tone sampling means for sampling a tone waveform signal applied from
outside;
built-in tone source means responsive to tone pitch information for
generating a tone waveform signal independent of said tone waveform signal
applied from outside and having tone pitch corresponding to the tone pitch
of the tone pitch information;
memory means capable of both writing and reading for storing waveform
sampled data of said tone waveform signal generated by said tone sampling
means and waveform sampled data of said tone waveform signal generated by
said built-in tone source means;
write control means for selecting one of waveform sampled data of a tone
waveform signal sampled by said tone sampling means and waveform sampled
data of a tone waveform signal generated by said built-in tone source
means and writing the selected waveform sampled data in said memory means;
tone pitch designation means for designating tone pitch of a tone to be
generated; and
read control means for reading out the waveform sampled data from said
memory means in accordance with the tone pitch designated by said tone
pitch designation means;
wherein said tone signal generation device generates a tone signal
corresponding to the waveform sampled data read out from said memory
means.
2. A tone signal generation device as defined in claim 1, further
comprising:
allocation setting means for setting at least one of a first performance
part having a normal tone range and a second performance part having a
tone range whose main tone range is different from the tone range of the
first performance part as a performance part to which the waveform sampled
data stored in said memory means should be allocated as tone source data;
and
tone pitch information supply means for supplying the tone pitch
information to said built-in tone source means in such a manner that, when
the waveform sampled data of said memory means is allocated to said second
performance part in accordance with setting by said allocation setting
means, said tone pitch information supply means supplies tone pitch
information which is different by a predetermined note interval from tone
pitch information supplied when the waveform sampled data is allocated to
said first performance part;
wherein the tone pitch of a tone waveform signal generated by said built-in
tone source means and written in said memory means differs by the
predetermined note interval when the waveform sampled data is allocated to
said second performance part from the tone pitch generated when the
waveform sampled data is allocated to said first performance part and, as
a result, when the waveform sampled data is allocated to said second
performance part, tone pitch of a tone signal corresponding to waveform
sampled data read out from said memory means in accordance with the tone
pitch designated by said tone pitch designation means is different by the
predetermined note interval from the designated tone pitch.
3. A tone signal generation device as defined in claim 2 wherein said
second performance part is a performance part of bass tones and, when the
waveform sampled data of said memory means is allocated to said second
performance part, the tone pitch information supplied from said tone pitch
information supply means to said built-in tone source means is lower by a
predetermined note interval from tone pitch information supplied when the
waveform sampled data is allocated to said first performance part.
4. A tone signal generation device as defined in claim 1, further
comprising:
allocation setting means for setting at least one of a first performance
part having a normal tone range and a second performance part having a
tone range whose main tone range is different from the tone range of the
first performance part as a performance part to which the waveform sampled
data stored in said memory means should be allocated as tone source data;
and
write rate designation means for designating a write rate for writing a
waveform sampled data of a tone waveform signal generated by said built-in
tone source means in said memory means in such a manner that, when the
waveform sampled data of said memory means is allocated to said second
performance part in accordance with setting by said allocation setting
means, said write rate designation means designates a write rate which is
different by a predetermined note interval from a reference write rate
designated when the waveform sampled data is allocated to said first part;
whereby when the waveform sampled data of said memory means is allocated to
said second performance part, tone pitch of a tone signal corresponding to
waveform sampled data read out from said memory means in accordance with
the tone pitch designated by said tone pitch designation means is
different by the predetermined note interval from the designated tone
pitch.
5. A tone signal generation device as defined in claim 4 wherein said
second performance part is a performance part of bass tones and, when the
waveform sampled data of said memory means is allocated to said second
performance part, the write rate designated by said write rate designation
means to said memory means is higher by a predetermined note interval from
a write rate designated when the waveform sampled data is allocated to
said first performance part.
6. A tone signal generation device as defined in claim 1, further
comprising editing processing means for subjecting the waveform sampled
data stored in said memory means to a desired tone editing processing.
7. A tone signal generation device, comprising:
a tone signal input means for receiving a tone waveform signal from
outside;
built-in tone source means responsive to information which designates
generation of a tone for generating a tone waveform signal;
memory means capable of both writing and reading for storing waveform
sampled data of a tone waveform signal received through said tone signal
input means or waveform sampled data of a tone waveform signal generated
by said built-in tone source means;
sampling demand means for demanding inputting of a tone waveform signal
from said tone signal input means and writing waveform sampled data of the
input tone waveform signal in said memory means;
rise detection means for detecting rising of the tone waveform signal
received through said tone signal input means;
sampling control means for designating, when rise of the tone waveform
signal has not been detected by said rise detection means within a
predetermined period of time from the demand of writing of the waveform
sampled data by said sampling demand means, generation of a tone waveform
signal from said built-in tone source means and writing of waveform
sampled data of the generated tone waveform signal in said memory means;
and
read means for reading out the waveform sampled data stored in said memory
means and thereby generating a tone signal corresponding to the read out
waveform sampled data.
8. A tone signal generation device, comprising:
tone generation means for generating a tone signal;
pitch adjusting operator means for adjusting pitch of a tone signal
generated by said tone generation means;
pitch adjustment control means for enabling pitch adjustment to be made by
said tone generation means in response to operation of said pitch
adjusting operator means;
reference tone generation means for generating a reference tone signal
having a predetermined reference pitch;
selection switch means for selecting whether the reference tone signal
should be sounded or not;
detection means for detecting operation of said pitch adjusting operator
means in association with operation of said selection switch; and
tone sounding control means responsive to detection by said detection means
for automatically generating the reference tone signal from said reference
tone generation means and sounding the generated reference tone.
9. A tone signal generation device as defined in claim 8 wherein said tone
sounding control means causes a tone signal under pitch adjustment to be
automatically generated from said tone generation means and sounded in
response to detection by said detection means.
10. A tone signal generation device as defined in claim 9 wherein a target
pitch of a tone signal under pitch adjustment which is automatically
generated by said tone generation means is said reference pitch.
11. A tone signal generation device as defined in claim 8, further
comprising control means for causing, when pitch adjustment in said tone
generation means is made by said pitch adjustment control means in
response to operation of said pitch adjusting operator means, a tone
signal under pitch adjustment to be generated automatically from said tone
generation means and sounded.
12. A tone signal generation device as defined in claim 11 wherein a target
pitch of a tone signal under pitch adjustment which is automatically
generated by said tone generation means is said reference pitch.
13. A tone signal generation device as defined in claim 8 wherein said tone
generation means includes memory means for storing waveform sampled data
corresponding to a tone signal applied from outside and generates a tone
signal on the basis of the waveform sampled data stored in said memory
means.
14. A tone signal generation device, comprising:
tone sampling means for sampling a tone waveform signal applied from
outside;
sampled tone source means having memory means for storing waveform sampled
data corresponding to the tone waveform signal sampled by said tone
sampling means for generating a tone signal on the basis of the waveform
sampled data stored in said memory means;
built-in tone source means comprising a prepared tone source for generating
a tone waveform signal;
pitch adjusting operator means for adjusting pitch of a tone waveform
signal generated by at least one of said sampled tone source means and
said built-in tone source means;
mode selection means for selecting one of a first mode in which pitch
adjustment is made by both said sampled tone source means and said
built-in tone source means and a second mode in which pitch adjustment is
made by only said sampled tone source means; and
pitch adjustment control means for performing pitch adjustment in such a
manner that, when the first mode has been selected, pitch adjustment is
made in both said sampled tone source means and said built-in tone source
means in response to operation of said pitch adjusting operator means and,
when the second mode has been selected, pitch adjustment is made in only
said sampled tone source means in response to operation of said pitch
adjusting operator means.
15. A tone signal generation device, comprising:
tone sampling means for sampling a tone waveform signal applied from
outside;
sampled tone source means having memory means for storing waveform sampled
data corresponding to the tone waveform signal sampled by said tone
sampling means for generating a tone signal on the basis of the waveform
sampled data stored in said memory means;
tempo signal generation means for generating a tempo signal;
sampled tone pattern generation means responsive to the tempo signal
generated by said tempo signal generation means for generating pattern
data designating tone sounding timing and tone pitch of a tone signal to
be generated in said sampled tone source means;
tone pitch designation means for manually designating tone pitch of a tone
to be generated; and
select means for selecting one of an output of said tone pitch designation
means and an output of said sampled tone pattern generation means to be
allocated to said sampled tone source means;
control means for controlling the allocating of the output of one of said
sampled tone pattern generation means and said tone pitch designation
means to said sampled tone source means in accordance with a selection of
said select means.
16. A tone signal generation device as defined in claim 15, further
comprising rhythm selection means and in which said pattern generation
means generates the pattern data in accordance with a rhythm selected by
said rhythm selection means.
17. A tone signal generation device as defined in claim 15, further
comprising bass pattern generation means for generating an automatic
bass/chord performance pattern in response to the tempo signal generated
by said tempo signal generation means and in which said control means
performs control in such a manner that, when an automatic bass performance
has been selected in a performance mode in which said sampled tone source
means is used for bass tones, said sampled tone source means is driven in
accordance with the outputs of said tone pitch designation means and said
bass pattern generation means whereas, when the automatic bass performance
has not been selected in a performance mode in which said sampled tone
source means is used for bass tones, said sampled tone source means is
driven in accordance with the output of said sampled tone pattern
generation means.
18. A tone signal generation device as defined in claim 15, further
comprising:
rhythm pattern generation means for generating rhythm pattern data in
response to the tempo signal generated by said tempo generation means; and
rhythm tone source means for generating a rhythm tone signal in response to
the rhythm pattern data generated by said rhythm pattern generation means. |
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Claims |
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Description |
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BACKGROUND OF THE INVENTION
The present invention relates to a tone signal generation device of a
sampling system type which samples a tone signal applied from outside and
stores it in a memory and generates a tone signal by reading out waveform
sampled data stored in this memory at a desired tone pitch by key
operation or the like operation and, more particularly, to a tone signal
generation device having a built-in tone source and being capable of
storing either a tone signal generated from this built-in tone source or a
sampled tone signal from outside selectively in the memory and thereby
being capable of treating the tone signal generated from the built-in tone
source in the same manner as the sampled tone signal from outside.
The present invention relates also to a tone signal generation device of a
sampling system type capable of storing a tone signal from a built-in tone
source when a tone signal from outside has not been applied for a
predetermined period of time after designation of sampling of a tone
signal from outside.
The present invention further relates to a tone signal generation device of
a sampling system type having various functions.
As electronic musical instruments of a sampling system type, there are ones
such as disclosed in Japanese Patent Publication Nos. 33199/1986 and
47435/1986. In these prior art electronic musical instruments of a
sampling system type, a tone signal from outside is merely sampled and
stored in a memory and, even if there is a tone source in the electronic
musical instrument, a tone signal from this internal tone source cannot be
stored in the memory for sampling. Accordingly, a tone signal from the
internal tone source cannot be subjected to the same processings, i.e.,
sampled tone editing processings, as are applied to a tone signal sampled
from outside. The sampled tone editing processings herein mean processings
including ones according to which a sampled tone is sounded repeatedly and
reading of a sampled tone from the memory is made by reading addresses in
a reverse direction.
In a case where waveform sampled data of a tone signal sampled from outside
is written in a memory, write address of the memory generally changes at a
predetermined reference rate (e.g., tone pitch of A4 tone). If this memory
is accessed with an address signal which changes in accordance with the
same reference rate, waveform sampled data is read out from the memory and
sounded at the same tone pitch as the tone pitch of the sampled external
tone. Further, by changing the rate of the read address signal in
accordance with a desired tone pitch, a tone signal corresponding to the
sampled external tone can be sounded at a desired tone pitch corresponding
to the read rate.
On the other hand, it has been conceived that, in a case where a tone
signal from outside is sampled, selection is made as to whether the
sampled tone signal should be used in a part of bass tones or in a part of
normal tone range such as melody or chord. In this case, the prior art
tone generation device is so constructed that a tone signal sampled from
outside is written in a memory as it is at a predetermined reference rate.
In the above described prior art electronic musical instrument of a
sampling system type, a tone signal from outside is merely sampled and
stored in a memory and, accordingly, even if there is an internal tone
source in the electronic musical instrument, a tone signal from this
internal tone source cannot be stored in the memory for sampling so that
the tone signal from the internal tone source cannot be subjected to the
same processings, i.e., the sampled tone editing processings, as are
applied to the tone signal sampled from outside. The prior art device is
therefore disadvantageous in that it cannot utilize functions of the
electronic musical instrument of a sampling system type to the fullest
extent.
Besides, the prior art electronic musical instrument is not so adapted that
a write control of a sampled tone is performed having regard to a
performance part in which the sampled tone signal is used and,
accordingly, a sampled tone of a part of lower tone range such as bass
tones and a sampled tone of a part of a normal tone range are sometimes
written in a memory at the same tone pitch. This necessitates capability
of a read control circuit to cope with a broader tone range for enabling a
tone to be sounded in sufficiently broad tone range during reading and
performance of a tone with resulting complication in the circuit design.
In a case where an external tone signal has not been applied or sampled due
to some reason (e.g., erroneous operation in sampling the external tone,
disorder of a microphone, failure in inputting of the external tone, or
interruption of the external tone sampling operation by leaving of the
performer from his seat) notwithstanding that the performer has designated
sampling of the external tone signal by operation of a switch or the like
means, the prior art device maintains a standby state to receive an
external tone signal. This is because an external tone must be always
sampled for a sampled tone to be sounded during performance.
In the electronic musical instrument of a sampling system, as described
above, if an external tone signal has not been applied or sampled for some
reason notwithstanding that sampling of the external tone signal has once
been designated, a standby state to receive an external tone signal is
maintained indefinitely. Therefore, when the performer who is not aware of
this erroneous operation or who has returned to his seat after leaving it
starts to play on the keyboard, a tone sometimes is not sounded despite
depression of a key because the tone has not been sampled in the memory
yet. Moreover, the performer tends to misunderstand this state in which
the tone is not sounded despite depression of the key to be a disorder of
the device.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide a tone
signal generation device capable of sampling not only a tone signal from
outside but also a tone signal generated from a built-in tone source for
storing it in a memory for a sampled tone whereby the sampling function of
the device is expanded.
It is another object of the present invention to provide a tone signal
generation device in which, when a tone signal generated by a built-in
tone source is sampled and stored in a memory for sampled tones, write
control of a sampled tone is performed having regard to a performance part
in which the sampled tone is used in such a manner that a sampled tone in
a part of lower tone range such as bass tones (or, conversely, a part of
higher tone range) is written in the memory at a lower tone pitch than a
sampled tone in a part of a normal tone range (or, conversely, at a higher
tone pitch) whereby a tone can be generated in a sufficiently broad tone
range proper to a performance part selected during reading and performance
even if the read control circuit is of a simple construction suitable for
use in a relatively narrow tone range.
It is another object of the present invention to provide a tone signal
generation device which is capable of automatically sampling a tone signal
generated from a built-in tone source in a memory when a tone signal from
outside has not been applied for a predetermined period of time after
designation of sampling of an external tone thereby releasing the device
from a sampled tone standby mode and bringing about a mode in which the
device can generate a tone.
It is another object of the present invention to provide a tone signal
generation device in which, when a pitch adjustment operation such as
tuning is made, a tone of a predetermined reference pitch can be sounded
by operation of a switch in association with the pitch adjustment
operation whereby the pitch adjustment can be facilitated.
It is another object of the present invention to provide a tone signal
generation device in which, when a pitch adjustment operation such as
transposition is made, whether the pitch adjustment operation is made in
both a sampled tone source including a memory storing a tone signal
sampled from outside and a built-in tone source or the pitch adjustment
operation is made in only the sampled tone source can be selected.
It is still another object of the present invention to provide a tone
signal generation device which can, for realizing multi-purpose
utilization of a sampled tone source, perform control selectively as to
whether a sampled tone source is driven in accordance with pattern data
designating tone sounding timing and tone pitch or in accordance with tone
pitch designation by depression of a key or the like means.
The tone signal generation device according to the present invention
comprises tone sampling means for sampling a tone signal applied form
outside, built-in tone source means responsive to tone pitch information
for generating a tone signal having the tone pitch corresponding to the
tone pitch of the tone pitch information, memory means capable of both
writing and reading for storing waveform sampled data, write control means
for selecting one of waveform sampled data of a tone signal sampled by
said tone sampling means and waveform sampled data of a tone signal
generated by said built-in tone source means and writing the selected
waveform sampled data to said memory means, tone pitch designation means
for designating tone pitch of a tone to be generated, and read control
means for reading out the waveform sampled data from said memory means in
accordance with the tone pitch designated by said tone pitch designation
means, said tone signal generation device generating a tone signal
corresponding to the waveform sampled data read out from said memory
means.
If a tone signal applied from outside is to be sampled and written in the
memory means, by the control of the write control means, waveform sampled
data of a tone signal sampled by the tone sampling means is selected and
written in the memory means. If, on the other hand, a tone signal
generated by the built-in tone source means is to be sampled and written
in the memory means, by the control of the write control means, waveform
sampled data of a tone signal generated by the built-in tone source means
is selected and written in the memory means. In this manner, one of the
waveform sampled data of the tone signal applied from outside and the
waveform sampled data of the tone signal generated by the built-in tone
source means can be selected and written in the memory means. By this
arrangement, the same processing which is applied to a tone signal sampled
from outside and stored in the memory means, i.e., the sampled tone
editing processings etc. can be applied also to a tone signal from the
built-in tone source. In other words, the function as the tone signal
generation device of a sampling system type can be performed with respect
also to a tone signal generated by the built-in tone source.
In one aspect of the present invention, the tone signal generation device
is characterized in that it comprises allocation setting means for setting
at least one of a first part having a normal tone range and a second part
having a tone range whose main tone range is different from the tone range
of the first part as a part to which the waveform sampled data stored in
said memory means should be allocated as tone source data, tone pitch
information supply means for supplying the tone pitch information to said
built-in tone source means in such a manner that, when the waveform
sampled data of said memory means is allocated to said second part in
accordance with setting by said allocation setting means, said tone pitch
information supply means supplies tone pitch information which is
different by a predetermined note interval from tone pitch information
supplied when the waveform sampled data is allocated to said first part,
the tone pitch of a tone signal generated by said built-in tone source
means and written in said memory means being different by the
predetermined note interval when the waveform sampled data is allocated to
said second part from the tone pitch generated when the waveform sampled
data is allocated to said first part and, as a result, when the waveform
sampled data is allocated to said second part, tone pitch of a tone signal
corresponding to waveform sampled data read out from said memory means in
accordance with the tone pitch designated by said tone pitch designation
means is different by the predetermined note interval from the designated
tone pitch.
The allocation setting means can be used to determine which of the first
part of the normal tone range and the second part whose main tone range is
different from the tone range of the first part the waveform sampled data
stored in the memory means should be allocated. The tone pitch supply
means supplies the tone pitch information to the built-in tone source
means in a manner to supply different tone pitch information depending
upon setting by the allocation setting means.
By way of example, the second part is a part of bass tones and, when the
waveform sampled data of the memory means is allocated to the part of bass
tones, the tone pitch information supply means supplies tone pitch
information which is lower by a predetermined note interval than when the
waveform sampled data is allocated to the part of the normal tone range.
By this arrangement, the tone pitch of a tone signal generated by the
built-in tone source means and written in the memory means is lower by the
predetermined note interval when the waveform sampled data is allocated to
the part of bass tones than when the waveform sampled data is allocated to
the part of the normal tone range and, as a result, when the waveform
sampled data is allocated to the part of bass tones, tone pitch of a tone
signal corresponding to waveform sampled data read out from the memory
means in accordance with the tone pitch designated by the tone pitch
designation means is lower by the predetermined note interval than the
designated tone pitch.
If, for example, waveform sampled data stored in the memory means is
allocated to the part of the normal tone range, tone pitch information of
a predetermined reference tone pitch (e.g., A4 tone) is supplied to the
built-in tone source means to cause the built-in tone source means to
generate a tone signal of the reference tone pitch and this tone signal is
written in the memory means in accordance with the control of the write
control means. On the other hand, if waveform sampled data stored in the
memory is allocated to the part of bass tones, tone pitch information
(e.g., A3 tone) which is lower by a predetermined note interval (e.g., one
octave) than the reference tone pitch is supplied to the built-in tone
source means to cause the built-in tone source to generate a tone signal
of a tone pitch which is lower by the predetermined note interval than the
reference tone pitch in response to the tone pitch information and this
tone signal is written in the memory means by the control of the write
control means. In this case, it is assumed that the write rate is the same
in both instances (e.g., a rate corresponding to change of the address
signal of A4 tone).
In this case, during reading, tone pitch of a tone signal corresponding to
waveform sampled data read out from the memory means with respect to the
same read address change rate is lower by the predetermined note interval
(e.g., one octave) in the case of a tone signal corresponding to the
waveform sampled data allocated to the part of bass tones than in the case
of a tone signal corresponding to the wavef | | |
