| 摘要 |
A signal processor for providing a transistor amplifier with the frequency response of a valve amplifier and loudspeaker .A signal processor, which may be digital, filters an audio signal to provide an input signal for ,a transistor amplifier such that a similar audible effect is obtained as when the audio signal is input to a valve amplifier driving the loudspeaker. The loudness effect due to interaction of the relatively large valve amplifier output impedance and the frequency-dependent impedance of the loudspeaker is emulated. The signal processor may emulate the amplitude and frequency distortion of a valve amplifier and may provide presence and resonance  tone adjustments. |
