Low delay coding of wideband audio (20 Hz-15 kHz) at 64 kbps
نویسندگان
چکیده
A 64 kbps coder of wideband (15 kHz) monophonic audio signals is described. Its structure is based on the transform coded excitation scheme, adopted to 7 kHz band signals. Significant modifications are proposed, that yield the reduction of delay while keeping an almost transparent quality of speech and music, equivalent to that provided by the MPEG1, layer II audio standard at the same bit rate. Algorithmic delay has been reduced to 17 ms approximately 1/3 the delay of the MPEG coder.
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