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Minimum Phase

A simplistic definition would be type of filter design where the frequencies are delayed by the least possible amount in their passage through the filter, but some frequencies will acquite greater phase shifts than others. Most analogue filters us

Pre-ringing

Pre-ringing refers to an inherent character of the impulse response of linear-phase filters employed in D-A or A-D converters. In a conventional analogue or minimum phase filter, an input impulse signal will generate an output impulse response with a strong initial spike followed by a string of ripples of decrasing magnitude. In a linear-phase filter the impulse spike is preceded by a build-up of ripples in advance of the impulse arriving, and a symmetrical string of decaying ripples afterwards.

Linear Phase

A type of filter design where the phase response is a linear function of frequency. In other words, all frequencies are delayed in their passage through the filter by exactly the same amount.

Word-length

A word is a unit or block of data employed in a computer, and so the word-length defines the number of bits employed in each word. A word length of 8-bits is normally called a byte. The CD format uses a word-length of 16 bits, but more modern systems typically use a 24-bit wordlength.

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