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diff --git a/audio/shorten/README b/audio/shorten/README new file mode 100644 index 0000000000..875c946596 --- /dev/null +++ b/audio/shorten/README @@ -0,0 +1,9 @@ +shorten reduces the size of waveform files (such as audio) using +Huffman coding of prediction residuals and optional additional +quantisation. In lossless mode the amount of compression obtained +depends on the nature of the waveform. Those composing of low +frequencies and low amplitudes give the best compression, which may +be 2:1 or better. Lossy compression operates by specifying a minimum +acceptable segmental signal to noise ratio or a maximum bit rate. Lossy +compression operates by zeroing the lower order bits of the waveform, +so retaining waveform shape. |