Patent US6519558B1 successfully refreshed from Google Patents.
US6519558B1
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US
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Audio signal pitch adjustment apparatus and method
Assignee: Sony Corp
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Filing: 2000-05-19
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Granted: 2003-02-11
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Expires: 2020-05-19
Abstract
Abstract A signal processing method and apparatus is disclosed, which is capable of reproducing a coded audio signal by decoding it while shifting its pitch, and reproducing, from an original sound, a sound having a sufficiently higher pitch than the original sound with few operations and less cost for the decoder used in the signal processing apparatus, and an information serving medium for serving a program which implements the signal decoding and pitch shifting. In one embodiment, the method of providing a signal processing method for decoding a coded signal for reading, includes setting a pitch for the coded signal, decoding only a low frequency portion of the coded signal according to the set pitch, and shifting the pitch of the decoded read signal based on the set pitch.
Inventors
- 👤 Kyoya Tsutsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:37
CPC Classifications
G; G10; G10L; G10L21/00; G10L21/04; G10L19/00; G10L19/02; G10L21/003; G10L21/007; G10L21/013; G10L2021/0135
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
60 words
A signal processing method for decoding a coded signal for reading, comprising: setting a pitch for the coded signal to a higher band; decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and shifting the pitch of the decoded signal to said higher band based on the set pitch.
Claim 2
Dependent Claim
60 words
A signal processing method for decoding a coded signal for reading, comprising: setting a pitch for the coded signal to a higher band; decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and shifting the pitch of the decoded signal to said higher band based on the set pitch.
Claim 3
Dependent Claim
50 words
The method as set forth in claim 1 , wherein the coded signal is one acquired at least by dividing a frequency band of a signal into subbands and then coding the subbands; and wherein only a low frequency one, corresponding to the set pitch, of the subbands is decoded.
Claim 4
Dependent Claim
50 words
The method as set forth in claim 1 , wherein the coded signal is one acquired at least by transforming a signal to frequency components and then coding the frequency components; and wherein only a low frequency one, corresponding to the set pitch, of the transformed frequency components, is decoded.
Claim 5
Dependent Claim
39 words
The method as set forth in claim 1 , wherein a digital read signal whose pitch has been shifted based on the set pitch is converted to an analog read signal with a clock corresponding to the set pitch.
Claim 6
Dependent Claim
33 words
The method as set forth in claim 1 , wherein at a time of pitch shifting, only a low frequency portion of the decoded read signal is sampling-transformed based on the set pitch.
Claim 7
Dependent Claim
41 words
The method as set forth in claim 1 , wherein at a time of pitch shifting, zero is inserted at a high frequency portion of the decoded read signal and the high frequency portion is sampling-transformed based on the set pitch.
Claim 8
Dependent Claim
62 words
An information processing method for decoding a coded signal for reading, comprising: setting a pitch for the coded signal to a higher band; decoding the coded signal with zero inserted at a high frequency portion, corresponding to the set pitch, of the coded signal at a relatively increased speed; and generating a read signal having a pitch corresponding to the set pitch.
Claim 9
Dependent Claim
62 words
An information processing method for decoding a coded signal for reading, comprising: setting a pitch for the coded signal to a higher band; decoding the coded signal with zero inserted at a high frequency portion, corresponding to the set pitch, of the coded signal at a relatively increased speed; and generating a read signal having a pitch corresponding to the set pitch.
Claim 10
Dependent Claim
66 words
A signal processing apparatus for decoding a coded signal for reading, comprising: means for setting a pitch for the coded signal to a higher band; means for decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and means for transforming the pitch of the decoded signal based on the set pitch to said higher band.
Claim 11
Dependent Claim
66 words
A signal processing apparatus for decoding a coded signal for reading, comprising: means for setting a pitch for the coded signal to a higher band; means for decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and means for transforming the pitch of the decoded signal based on the set pitch to said higher band.
Claim 12
Dependent Claim
51 words
The apparatus as set forth in claim 8 , wherein the coded signal is a one acquired at least by dividing the frequency band of a signal into subbands and then coding the subbands; and wherein only a low frequency one, corresponding to the set pitch, of the subbands is decoded.
Claim 13
Dependent Claim
50 words
The apparatus as set forth in claim 8 , wherein the coded signal is one acquired at least by transforming a signal to frequency components and then coding the frequency components; and wherein only a low frequency one, corresponding to the set pitch, of the transformed frequency components, is decoded.
Claim 14
Dependent Claim
39 words
The apparatus as set forth in claim 8 , wherein a digital read signal whose pitch has been shifted based on the set pitch is converted to an analog read signal with a clock corresponding to the set pitch.
Claim 15
Dependent Claim
33 words
The apparatus as set forth in claim 8 , wherein at a time of pitch shifting, only a low frequency portion of the decoded read signal is sampling-transformed based on the set pitch.
Claim 16
Dependent Claim
41 words
The apparatus as set forth in claim 8 , wherein at a time of pitch shifting zero is inserted at a high frequency portion of the decoded read signal and the high frequency portion is sampling-transformed based on the set pitch.
Claim 17
Dependent Claim
67 words
A signal processing apparatus for decoding a coded signal for reading, comprising: means for setting a pitch for the coded signal to a higher band; means for decoding the coded signal with zero inserted at a high frequency of the coded signal according to the set pitch at a relatively increased speed; and means for generating a read signal having a pitch corresponding to the set pitch.
Claim 18
Dependent Claim
67 words
A signal processing apparatus for decoding a coded signal for reading, comprising: means for setting a pitch for the coded signal to a higher band; means for decoding the coded signal with zero inserted at a high frequency of the coded signal according to the set pitch at a relatively increased speed; and means for generating a read signal having a pitch corresponding to the set pitch.
Claim 19
Dependent Claim
69 words
An information serving medium for serving a program according to which a coded signal is decoded and read, the program comprising: setting a pitch for the coded signal to a higher band; decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and shifting the pitch of the decoded signal based on the set pitch to said higher band.
Claim 20
Dependent Claim
69 words
An information serving medium for serving a program according to which a coded signal is decoded and read, the program comprising: setting a pitch for the coded signal to a higher band; decoding only a low frequency portion of the coded signal according to the set pitch at a relatively increased speed; and shifting the pitch of the decoded signal based on the set pitch to said higher band.
Claim 21
Dependent Claim
70 words
An information serving medium for serving a program under which a coded signal is decoded and read, the program comprising: setting a pitch for the coded signal to a higher band; decoding the coded signal with zero inserted at a high frequency portion of the coded signal according to the set pitch at a relatively increased speed; and generating a read signal having a pitch corresponding to the set pitch.
Claim 22
Dependent Claim
70 words
An information serving medium for serving a program under which a coded signal is decoded and read, the program comprising: setting a pitch for the coded signal to a higher band; decoding the coded signal with zero inserted at a high frequency portion of the coded signal according to the set pitch at a relatively increased speed; and generating a read signal having a pitch corresponding to the set pitch.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-02-10 | 2006-08-12 | 2007-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-10 | 2010-08-12 | 2011-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-10 | 2014-08-12 | 2015-02-11 | $7700.00 | Window Closed / Lapsed |