Signal processing apparatus and method
摘要
說(shuō)明書(shū)
(3) The signal processing apparatus as recited in (2), in which
the approximate replica generation unit includes a quantization unit configured to coarsely quantize the reception signal, and
the subtraction unit is configured to subtract, as the approximate replica signal, the quantized reception signal obtained by the quantization unit from the reception signal.
(4) The signal processing apparatus as recited in (3), in which
the quantization unit quantizes the reception signal from a bit depth of 16 bits to a bit depth of 4 bits.
(5) The signal processing apparatus as recited in (2), in which
the approximate replica generation unit generates an approximate replica signal for a portion of the reception signal which exceeds the signal level.
(6) The signal processing apparatus as recited in (5), in which
the approximate replica generation unit includes
-
- a phase detection unit configured to detect a phase of the reception signal,
- an envelope detection unit configured to detect an envelope of the reception signal,
- a complex composition unit configured to subject a phase detection result of the reception signal obtained by the phase detection unit and an envelope detection result of the reception signal obtained by the envelope detection unit to complex composition, and
