| 摘要 |
Disclosed are a channel state selection method and device based on ternary coding. The method comprises: performing modulation processing on a sound source signal to generate (2L+1) level quantization signals x; performing mapping transformation on the quantization signals x to generate control signals p, m and z; performing selection processing on the control signals p, m and z and an M-channel feedback signal b, and then, outputting an M-channel state vector signal y; performing shaping processing on the state vector signal y, and then, generating the M-channel feedback signal b; and completing electric-acoustic conversion after the state vector signal y passes through a multi-channel power amplifier and an energy converter unit. The device comprises a modulator module, a mapping module, a selection module, a shaping module, and a multi-channel digital power amplifier and a loudspeaker array or a multi-voice-coil loudspeaker unit module, which are connected in sequence. The present invention can effectively reduce hardware resource overheads, reduce hardware power consumption, improve system stability, further improve the amplitude of an output signal, and improve conversion efficiency, and has a high signal-to-noise ratio output capacity. |
