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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hermanowicz, E. Rojewski, M. |
| Copyright Year | 2007 |
| Description | Author affiliation: Gdansk Univ. of Technol., Gdansk (Hermanowicz, E.; Rojewski, M.) |
| Abstract | It is assumed that for a certain class of sounds there exists a relationship between their pitch and their complex dynamic representation - CDR in polar-form (real-valued log-envelope and instantaneous frequency). The CDR processing appears a powerful means for pitch shifting of chirplike sound signals fulfilling practically the assumption of the Bedrosian theorem. Scaling the CDR components can be used, e.g., in a generator of different melodies of calling signals, where the sound of each note in a melody is derived from a short recording of a voice of a chosen creature. For this aim a concept of a Bedrosian chirp is proposed whose local instantaneous amplitude and complex phasor spectra are separated. For the first time a quantitative measure to estimate and predict the quality of sound processing using the CDR scaling is introduced and its utility verified by experiments with real-life audio chirps. |
| Starting Page | 523 |
| Ending Page | 526 |
| File Size | 12843673 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424408814 |
| DOI | 10.1109/ICDSP.2007.4288634 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-07-01 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Performance evaluation Chirp instantaneous frequency and log-envelope chirp sounds pitch-shifting |
| Content Type | Text |
| Resource Type | Article |
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