VQF's Features


Tutorial Home >Music and Video >Digital Music >Audio Formats >How do I learn about the specific features of VQF audio?
Tutorial Home >Music and Video >MP3s >Audio Formats >How do I learn about the specific features of VQF audio?
Tutorial Home >Music and Video >Digital Music >Audio Formats >VQF, ATRAC3, & ePac >VQF’s Features
Tutorial Home >Music and Video >MP3s >Audio Formats >VQF, ATRAC3, & ePac >VQF’s Features

  Step 1:  Compression Ratios

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TWINVQ achieves a higher compression ratio (1/18 - 1/96) while maintaining high sound quality by means of "Vector Quantization" of the samples in the frequency domain, in contrast with the scalar quantization of conventional audio coders.
  Step 2:  Variable Implementation

All encoder/decoder processes can be carried out by PC software. The complexity of the decoder is small, and it can be easily implemented on various types of CPUs, even with a 16 bit fixed point DSP.
  Step 3:  Robustness

TWINVQ can be applied to the error prone environment, since it is robust against bit errors and frame loss. This feature is a result of TWINVQ's use of a fixed frame rate and robust vector quantizer, and not using any error sensitive techniques, such as adaptive bit allocation, variable length codes, and recursively dependent interframe prediction.
  Step 4:  Wide Range Coverage

TWINVQ can deal with a wide range of bandwidth and bit rate, which corresponds to telephone bandwidth, AM radio bandwidth, and high quality CD bandwidth. Both monaural and stereo signals can be efficiently encoded.