Slew-induced distortion (SID or slew-rate induced distortion) is caused when an amplifier or transducer is required to change output (or displacement), i.e. slew rate, faster than it is able to do so without error. [1] At such times any other signals may suffer considerable gain distortion, leading to intermodulation distortion. [2] Transient intermodulation distortion may involve some degree of SID and/or distortion due to peak compression.
These are effects that tend to occur only during parts of a waveform fed through audio amplifiers, that may give rise to audible degradation of the sound quality in music, even when fixed- frequency harmonic distortion tests show low amounts of distortion for a simple sinewave test signal.[ dubious – discuss][ citation needed]
TIM (Transient Intermodulation Distortion) was first discovered by Matti Otala in the 1960s due to accidentally wiring an amplifier incorrectly. [3]
First, Matti Otala found, back in the 1960s, by accidentally miswiring a power amp, that negative feedback was a problem with the subjective performance of audio circuits. Otala found that when both the open loop bandwidth increased and the feedback was reduced, the amp sounded better.
Slew-induced distortion (SID or slew-rate induced distortion) is caused when an amplifier or transducer is required to change output (or displacement), i.e. slew rate, faster than it is able to do so without error. [1] At such times any other signals may suffer considerable gain distortion, leading to intermodulation distortion. [2] Transient intermodulation distortion may involve some degree of SID and/or distortion due to peak compression.
These are effects that tend to occur only during parts of a waveform fed through audio amplifiers, that may give rise to audible degradation of the sound quality in music, even when fixed- frequency harmonic distortion tests show low amounts of distortion for a simple sinewave test signal.[ dubious – discuss][ citation needed]
TIM (Transient Intermodulation Distortion) was first discovered by Matti Otala in the 1960s due to accidentally wiring an amplifier incorrectly. [3]
First, Matti Otala found, back in the 1960s, by accidentally miswiring a power amp, that negative feedback was a problem with the subjective performance of audio circuits. Otala found that when both the open loop bandwidth increased and the feedback was reduced, the amp sounded better.