Digital audio signal transmission, reproducing and recording apparatus

摘要

A composite audio signal for recording is formed from multiple-channel digital audio signals using a predetermined compositing ratio, in addition to the multiple-channel digital audio signals, so that multiple-channel signals, normal stereo signals, and monaural signals can be reproduced. In one embodiment, an A/D converting portion 212 digitizes six-channel audio signals. Multiplying devices 213 to 216 (that multiply data of corresponding channels by predetermined coefficients) and adding devices 221 and 222 output composite audio data LMIX and RMIX. The record format then provides data storage areas for eight channels. A switch circuit 220 places LMIX and RMIX in blank areas. When signals are reproduced, six-channel stereo signals or two-channel stereo signals of composite data are selected corresponding to the user setting or the connection state of pin jacks.