Background Information on the Assessment Sound Quality
Can one measure Sound Quality?
Nonlinear distortions result from the different membrane amplitudes between recording (microphone 1 µm) and reproduction (loudspeaker 10mm). That is physics. On top of this further nonlinear distortions are generated by the imperfect electro-acoustical transducer. The effect of those distortions is demonstrated, which compromise the sound quality. AudioChiemgau developed an elegant solution to eliminate these distortions.
Click for details – PDF in German
Nonlinearities – Impacts – Solutions
Nonlinearities: Impacts and Solutions.
Click for details – PDF in German
Precise Room-Mode-Free Measurement of the Frequency Response
Precise Measurement of the Sound Pressure Level Frequency Response
in presence of disturbing Room Modes / in Standard Laboratories.
Click for details – Webpage in English
Comparison of Voltage Drive and Current Drive of a Woofer
Comparison of Voltage Drive and Current Drive of a Woofer – Effect on Sound Quality
Click for details – Website in English
Physical Distortions
Physical Distortions created by the movement of the loudspeaker membrane
Click for details – Webpage in English
Doppler Compensation
Because of the movement of the loudspeaker membrane, the location of the generation of the sound pressure varies over time. The different distances between membrane and listener cause the Doppler-Effect, a phase modulation of the sound at the receiver. This generates non-harmonic distortion products, which compromise significantly the reproduced sound. AudioChiemgau developed an Analogue Audio Processor, which completely eliminates the Doppler Effect.
Click for details – PDF in English
For audioXpress Magazine, October 2024
Non-Linear Amplitude Modulation (NLAM) of Loudspeakers
Non-Linear Amplitude Modulation (NLAM) of Loudspeakers.
Click for details – PDF in English
For audioXpress Magazine, …
Improving Transfer Function
How to perfect the Electro-Acoustic Transfer Function
of Electro-Dynamic Loudspeakers.
Click for details – PDF in English
For audioXpress Magazine, March 2024