Speech Bandwidth Extension Using DWT-FFT-Based Data Hiding
MetadataShow full item record
A novel transform-domain speech bandwidth extension algorithm is proposed to transmit information about the missing speech frequencies over a hidden channel, i.e., the related encoded spectral envelope parameters are hidden within the narrowband speech signal using discrete wavelet transform-fast Fourier transform-based data hiding (DWTFFTBDH) technique. The hidden information is recovered reliably at the receiver to produce a wideband speech signal of much higher quality. Obtained results confirm the excellent reconstructed wideband speech quality of the proposed algorithm over traditional methods.
KeywordsPublic Switched Telephone Network (PSTN), bandwidth extension of narrowband speech, DWT-FFT-based data hiding, speech quality, spread spectrum
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2020 vol. 29, č. 1, s. 174-181. ISSN 1210-2512
- 2020/1