Patent ID: 6327563
Filing Date: 2001-12-04
Classification: G10L,H04B

Abstract:
A wireless microphone comprising:a microphone for receiving a sound to generate a sound signal;an aid converter for a/d-converting said sound signal into audio data;compressing means for compressing said audio data in accordance with frequency resolution of the human being to generate compressed audio data, said compressing means including:band separating means for separating said audio data into M bands of audio data;quantizing means for quantizing M bands of said audio data, anddata grouping means for grouping M bands of said audio data to output N bands of said audio data as said compressed audio data in accordance with frequency resolution of the human being, M and N being natural numbers more than one, M>N; andtransmitting means for transmitting said compressed audio data, wherein said M and N bands each include the same amount of data.