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PDM Module for APx B Series Audio Analyzers - Audio Precision
https://www.ap.com/analyzers-accessories/interfaces-modules/pdm-module-apx-series-audio-analyzers/
PDM Module for APx B Series Audio Analyzers. Pulse Density Modulation (PDM) is a one-bit, high rate data stream that conveys a signal by modulating the density of the pulses. Applications for PDM include Micro-Electrical-Mechanical System (MEMS) microphones found in smartphones, and integrated circuits with PDM interfaces.
More about PDM - Audio Precision
https://www.ap.com/technical-library/more-about-pdm/
PDM Line Driver - Audio Precision - ap
https://www.ap.com/analyzers-accessories/accessories/pdm-line-driver/
The Audio Precision PDM Line Driver provides a buffer for the PDM audio data, allowing cable lengths of up to 45 ft (13.7 m) to be used between DUT and analyzer with no loss or alteration of the digital signal, as illustrated in the chart below.
Audio Precision Expands Channel Count for PDM Measurement
https://www.ap.com/news/audio-precision-expands-channel-count-for-pdm-measurement/
Audio Precision’s new PDM 16 module—shown here installed in an APx525 B Series audio analyzer and with its remote interface pod and cable—greatly expands the number of PDM test channels available to MEMS microphone array developers, enabling simultaneous analysis of up to 16 channels.
PDM 16 Input Module for APx B Series ... - Audio Precision
https://www.ap.com/analyzers-accessories/interfaces-modules/pdm-16-input-module-apx-series-audio-analyzers/
PDM is commonly used as the digital output of MEMS (micro-electromechanical system) microphones that are, either individually or in an array, integral components in smartphones, hearing aids, mobile computing, automotive systems, smart speakers and other IOT systems. PDM 16 is an optional input module for the modular APx Series audio analyzers.
Understanding PDM Digital Audio - users.ece.utexas.edu
https://users.ece.utexas.edu/~bevans/courses/rtdsp/lectures/10_Data_Conversion/AP_Understanding_PDM_Digital_Audio.pdf
PDM, which uses only one bit to convey audio, is simpler in concept and execution than PCM. It has become popular as a way to deliver audio from microphones to the signal processor in mobile telephones. PDM is ideally suited for this task because it brings the benefits of digital, such as low noise and freedom from interfering signals, at low cost.
Audio Precision APX585 8 Channel Audio Analyzer
https://www.testequipmenthq.com/product/audio-precision-apx585
Audio Precision APX585 8 Channel Audio Analyzer Description: The APx585 is a true multichannel audio analyzer, with 8 simultaneous analog outputs and inputs. It is ideal for designing and testing consumer devices such as home theatre receivers or pro devices such as mixing consoles. The APx586 adds a second input module for 16 simultaneous ...
Audio Precision Expands Channel Count for PDM Measurement
http://syscosoft.com/audio-precision-expands-channel-count-for-pdm-measurement
BEAVERTON, OREGON, November 5, 2019: Audio Precision introduced today their PDM 16 module for the versatile APx500 Series audio analyzers. The new module offers simultaneous acquisition and measurement of up to 16 channels of PDM signals, making it the highest channel-count solution available for MEMS microphone and MEMS mic array testing.
Audio Precision Expands Channel Count for PDM …
https://www.prnewswire.com/news-releases/audio-precision-expands-channel-count-for-pdm-measurement-300951644.html
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