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Midrange Room Influence

The room influences midrange frequencies with a mix of modal and interference based effects. Allow me to declare the midrange frequency (MF) range to reach from 100 Hz to about 2 kHz. This is the […]

David   Room Acoustics
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„ghost fundamental“ and „engaging sound”

Music makes you sleepy on some seats in a concert hall. The same music on other seats in the same concert hall totally engages you. On the latter seat it makes you totally feel the […]

Wilhelm   Allgemein
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The Sound of Distortion

Some personal thoughts about Distortion During the last years there seems to be a refreshed trend to relate sound characteristics of amplifiers to their distortion characteristics. I have no expertise about amplifiers and distortion, since […]

David   Allgemein
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Which audio measurements are for whom?

This question implies there are audio relevant measurements selected from a variety of measurements and  out of those there are different audio measurements of relevance for different users. And again, there is an assumption of […]

Wilhelm   Allgemein
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Why is flat frequency response so important?

Frequency response is a way to describe the output of a speaker system. Talking about speaker systems we can look at it as a whole or as individual components. With components reaching across the whole […]

Wilhelm   Allgemein
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High Frequencies (HF) – More Questions Than Answers

The picture on top shows 100 ms of the room response after an initial impulse was radiated by the loudspeaker. Since low frequency (LF) energy is distributed over time what we see is mostly high […]

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Music for unborn babies

Some studies indicate that, if you play music to the unborn babies, they can hear and even react to the sound by moving or with the rhythm of their breathing. Research and specialists make us […]

Wilhelm   Allgemein
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Modal coupling – aka Low Frequency Optimization

Modal coupling is about how your loudspeaker’s and listening position influence the reproduction of low frequencies (LF) in your room. Fundamental frequencies We have been talking about room modes in the resonance blog. At a […]

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Signal latency and cutouts

Signal latency and cutouts are not the first thing that comes to your mind, when developing a tool to measure minimum criteria for HiFi capability of an audio system. Making things easier and user friendly […]

Wilhelm   Allgemein
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Acoustic radiation impedance

What is radiation impedance? Let us have a look at Wikipedia: “Acoustic impedance and specific acoustic impedance are measures of the opposition that a system presents to the acoustic flow resulting of an acoustic pressure […]

David   Acoustics . Loudspeakers
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