Sound-level measurements offer a conventional way to measure sound but do not contain frequency information, making it difficult to compare different sounds or vibration. Octave analysis filters the ...

Crossover: active lowpass filter, variable,15 - 199 Hz with variable slope, 6 – 48 dB /Octave in 6 dB increments; Subsonic filter: 15 – 35 Hz, with variable slope, 6 – 48 dB /Octave in 6 dB increments ...

The voltage-amplifier stage (or VAS) has often been regarded as the most critical part of a power-amplifier, since it not only provides all the voltage gain but also must deliver the full output ...

The last several years have seen an increase of the number of options for room equalization at bass frequencies available to consumers. Options vary widely in type, functionality, ease of use, and ...

My last column showed how a single-stage delta-sigma modulator (DSM) produces an output that is a sum of the low pass-filtered input signal and the high pass-filtered quantization noise (see “Part 4,” ...