초록

A peak limiter is described which employs the Hilbert transform. Effectively distinct processing occurs for low frequency and high frequency signals and harmonic distortion results only when the limiter is excited by high frequencies.

대표청구항 ▼

An audio-frequency peak limiter comprising: filter means for filtering an audio frequency signal into a first band which includes low-frequency signals and a second band which includes high frequency signals; first clipping means for providing clipping with substantially no harmonic distortion of a

An audio-frequency peak limiter comprising: filter means for filtering an audio frequency signal into a first band which includes low-frequency signals and a second band which includes high frequency signals; first clipping means for providing clipping with substantially no harmonic distortion of a signal, coupled to said filter means for receiving said first band; second clipping means for providing audio frequency clipping of a signal coupled to said filter means for receiving said second band; combining means coupled to said first and second clipping means for combining the outputs of these means to provide a peak limited audio signal; whereby a peak limiter is realized which provides low harmonic distortion for low-frequency signals and which permits harmonic distortion only when excited by high frequencies.