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Faint sounds of distortion

Did you ever hear the noise produced by an audio amplifier under measurement, with resitors instead of loudspeakers connected? There is a lot of buzz, and sometimes hum. If components in an audio circuit produce […]

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Flaws in audio at listening position – stereo channel left and right level correlation

Theory explanation    Stereo, a method of sound reproduction We described stereo effects to some extend already in the criteria stereo capability and Frequency response channel correlation. Stereo is a method of sound reproduction that […]

Wilhelm   Allgemein
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Digital HiFi Adventures – and Questions

Between 1990 and 2005 I worked with digital controllers for custom made horn systems in critical sound reinforcement situations. The convenience to have a variety of filters, delay and equalizing selected via a nice graphical […]

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Flaws in audio at listening position – frequency response channel correlation

 Text to speech  –  TestHiFi blog: Flaws in audio at listening position – frequency response channel correlation Theory explanation    Frequency response channel correlation at listening position We described the frequency response amplitude level or […]

Wilhelm   Allgemein
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Flaws in audio at listening position – frequency response

 Text to speech  –  TestHiFi blog: Flaws in audio at listening position – frequency response Theory explanation    Frequency response amplitude drops or peaks at listening position Frequency response is used to describe the output […]

Wilhelm   Allgemein
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Listening Position Frequency Response

 Text to speech  –  Listening Position Frequency Response Does measuring amplitude versa frequency (frequency response) at the listening position make sense? I wrote about measuring at the listening position before, and covered room influence etc […]

David   Allgemein
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Flaws in audio systems – stereo capability

 Text to speech  –  TestHiFi blog: Flaws in audio systems – stereo capability Theory explanation    Systems with one channel only or summed up left and right channel. Such systems are incapable of providing stereo […]

Wilhelm   Allgemein
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Phase and Time 3

 Text to speech  –  TestHiFi blog: Phase and Time 3 Phase and Time – Time Domain Response, Step Response In my first blog „Phase and Time 1“ I focused on amplitude and phase shown as […]

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Flaws in audio systems – aurally weighted intermodulation disconsonance

 Text to speech  –  TestHiFi blog: Flaws in audio systems – aurally weighted intermodulation disconsonance Theory explanation    Frequencies with higher level of upper order harmonic distortion compared to level of lower order harmonic distortion […]

Wilhelm   Allgemein
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Phase and Time 2

 Text to speech  –  TestHiFi blog: Phase and Time 2 The system that shouldn’t work well – phase and time completely ignored! Last time I wrote about phase and time issues of loudspeakers. A result […]

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