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Some new HiFi adventures

A Re-Visit Back to a friend and customer’s place I had a strange experience which I would like to share. And still don’t quite understand … The System is complex and very high quality : […]

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Flaws in audio at listening position – stereo channel time coherence

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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Flaws in audio at listening position – frequency group time coherence

Theory explanation    Time and phase coherence is a very complex topic, probably not yet fully researched which and how those issues directly influence or correlate to the subjective perceived sound quality. However, it is […]

Wilhelm   Allgemein
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Listening

Strange sounds Recently, I walked towards the underground station and heard a strange noise. From a construction site, hammering could be heard. But, reflected from the stations walls, the “tack, tack, tack” sound was changed […]

David   Allgemein
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Why isn’t time and phase a prominent topic in audio?

Stereo channel time and phase coherence Sound mixer or sound engineer proactively design the sound with in-phase or out-of-phase channels. More mono able sound, i.e. channels in-phase will sum-up in levels. Amplitudes of same frequencies […]

Wilhelm   Allgemein
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Time and phase coherence – live, MQA, playback, overall

This is a very complex topic. It is not fully researched which and how the issues directly influence or correlate to the subjective perceived sound quality. However the overall time and phase coherence influences the […]

Wilhelm   Allgemein
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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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