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AN-1496 Noise, TDMA Noise, and Suppression …
https://www.ti.com/lit/an/snaa033d/snaa033d.pdf
• TDMA Noise (“buzz”) in GSM mobile phones is generated from a 217Hz waveform which produces an audible noise when coupled into the audio path and conducts to the speaker, earpiece, or microphone4. Further details of this type of noise will follow. Before delving into solutions that minimize the problem TDMA Noise customers have ...
TDMA Noise Countermeasures, Reception Sensitivity ...
https://product.tdk.com/en/techlibrary/solutionguide/suppression-filter_varisotr_microphone.html
If communication waves from cellular or Wi-Fi sources interfere with and intrude into microphone lines for smartphones or other devices, some of their components will become noise components in audible bands known as "TDMA noise", and may …
Mitigating TDMA Noise in Microphone Lines
https://www.speechtechmag.com/Articles/ReadArticle.aspx?ArticleID=143910
This phenomenon is known as time division multiple access (TDMA) noise and can manifest as unpleasant sounds emanating from speakers. What is TDMA noise? Have you ever been in a conference meeting and accidentally placed your smartphone near to the speakerphone and heard an irritating, humming noise?
Audio Rectification and TDMA/GSM EMI - In Compliance …
https://incompliancemag.com/article/audio-rectification-and-tdmagsm-emi/
Usually in audio rectification problems the victim cables pick up RF signals because they act as receiving antennas. A typical example of this effect is the noise from mobile phones using Time Division Multiple Access (TDMA) technology as GSM to nearby audio systems using speakers.
Application Note 1496 Noise, TDMA Noise, and Suppression ...
http://application-notes.digchip.com/006/6-8879.pdf
MA noise problems, but no single solution can prevent TDMA noise from occurring. Note: In this application note the terms “TDMA noise”, “RF energy”, “audio buzz”, and “buzz” are used interchangeably. References 1. P. Horowitz, W. Winfield. The Art of Electronics, Cambridge University Press, New York, 1999, Chapter 7 2. M. Rashid.
[SOLVED] - who knows TDMA noise. | Forum for Electronics
https://www.edaboard.com/threads/who-knows-tdma-noise.36709/
TDMA noise maybe always mentioned in audio loop. when a mobilephone is worked ,transmitter enabled once every eight time interval,it's period is about 216.7Hz.so it can be interfere with the audio loop.
TLV320AIC3104-Q1: GSM TDMA Noise - Audio forum - Audio ...
https://e2e.ti.com/support/audio/f/audio-forum/784143/tlv320aic3104-q1-gsm-tdma-noise
TLV320AIC3104-Q1: GSM TDMA Noise. Pradeep Mohan Intellectual 725 points Part Number: TLV320AIC3104-Q1 Other Parts Discussed in Thread: TLV320AIC3104. Hello TI, we have recently observed that we have GSM interference on our microphone lines. ... Please find attached the schematics for the audio part of the circuit. over 2 years ago. Cancel; 0 ...
[FAQ] General Design Tips and Useful Information - Audio ...
https://e2e.ti.com/support/audio-group/audio/f/audio-forum/719211/faq-general-design-tips-and-useful-information
TDMA noise is a problem in many portable and office audio products. This discussion is taken from a correspondence with a customer, and it contains a few general recommendations on how to improve TDMA noise in a general audio application. This particular application is for a subsystem - an amplifier with both headphone (HP) and speaker (class-D ...
P25 TDMA Control Channel decoding -- requesting help from ...
https://forums.radioreference.com/threads/p25-tdma-control-channel-decoding-requesting-help-from-experts.429312/
Perhaps this form of "TDMA" is the same as P2 voice channels from a modulation standpoint, but it would be good not to have to guess... It's a wav as if it were taken from a discriminator tap basically; 'raw audio' is in DSDPlus parlance. You press "r" in dsdplus to record the raw audio, which can be fed back in to DSDPlus later.
RFI In Audio Systems
http://www.audiosystemsgroup.com/AES-RFI-SF08.pdf
RFI In Audio Systems Pin 1 Problems, Poor Shielding, and Poor Input/Output Filtering Jim Brown Audio Systems Group, Inc. Chicago – Santa Cruz [email protected] The Heart of the Problem • Audio equipment can work as a radio receiver if we allow it to do so • The wires inside our equipment, and cables
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