Audio Converters

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Audio Converters

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  • Forum Post: AIC3254 Headset Detection

    jerome dumas
    Dear All I'm trying to use the headset detection feature of the aic3254, but as soon as I turn it on, it results in a high frequency audio signal in the headphone output. Basically I've a on board mic, biased from external (mic bias available on a 4 pins audio jack), the external bias is conncted...
    on Nov 27, 2009

  • Forum Post: noise reduction AIC3254

    Gonzalo R.
    Hi everyone, I'm using AIC3254 with the PurePath Portable Audio Studio and I need to use a noise reduction stage. The software provides a component 'nr_var' , which has only 4 basics runtime properties: Threshold, Attenuation, HighFreq and LowFreq. I've tested every combination and...
    on Sep 28, 2010

  • Forum Post: AIC3254 Dual Mic Noise Cancelling

    Carlos C.
    Hi, I'm reviewing the DualMic NC function of AIC3254 with PurePath v1.8 rev 10211. The properties of this component dont match with the ones in the help. Have you got any guide or app-note to use correctly? I think that its a component very interesting, and i want to evaluate. Thanks...
    on Nov 19, 2010

  • Forum Post: Noise Cancelling and VOX

    Hakan Guezeloglu
    Hello, I am searching for a system for handsfree radio, which cancelles the surrounding noise with dual mic and wich has Voice over Exchange (VOX) Function. Can anybody help me to find the right components? Thanks a lot
    on Jan 19, 2011

  • Forum Post: AIC32X4 DAC output noise

    David Whitehouse
    Hi, I've put an AIC3254 in a new design and I'm getting lots of noise in the DAC output (around 50mV p-p) - I'm running at 125kHz FS with a DOSR of 48 for a 6MHz DAC_MOD_CLK (96MHz CODEC_CLK_IN; MDAC=MDAC=4; PRB_P12; PTM3_4). Using filter B or C doesn't make any difference, and routing...
    on Feb 24, 2011

  • Forum Post: Audio ground loops

    alex dinovitser
    Dear TI, I am designing hi fidelity audio systems employing a PCM2704 connected to a computer by a long USB(1) cable. During prototyping, I found the major source of noise was due to a ground loop. This loop was formed by capacitave coupling from the laptop power supply to ground, and the grounded...
    on Jun 9, 2011

  • Forum Post: Noise Problem with the PCM4222

    Philipp Thiel
    Hy Guys! I have a problem with the PCM4222. The PWM-Output a randomly deviations in his Duty-Cycle. There are some PWM-Cycles with 66% and 33%. When it occours, just 33% or 66%. The analog Inputs directly are connected the 1,95V Vcom. Therefore the PWM must have Duty of 50% ever. At the time...
    on Jul 10, 2011

  • Forum Post: My TAS3204 project found the noise issue ,High-frequency whistle, Headache problem!

    Yuri68604
    Hello Ti Experts, My System is arm+tas3204 , and tas3204 's code created by purepath studio and download via slave i2c mode through arm and using the ADC & DAC of the tas3204 itself not use the external ADC & DAC. for the MCU download to the DSP CODE , and DSP CODE the process flow...
    on Aug 14, 2011

  • Forum Post: Re: AIC3104 Output Noise

    ivan mercier
    Hi, We have the problem with our codec tlv320aic3104...I'm already using L1/R1... I think the problem comes from DAC when it power up. Is there any reserved register we can configure to enable auto mute DAC like aic32XX ? Thank you
    on Sep 8, 2011

  • Forum Post: AIC3104 Output Noise

    Denis
    I need some assistance in reducing the TLV320AIC3104 when the line outputs are turned on. It sounds like white noise. Here's the configuration, I have a master and slave unit which operate using the CC8520 Pure Path Wireless SOIC. The master has a differential mic input on the MIC1R channel of...
    on Feb 3, 2011

  • Forum Post: TLV320AIC3104 : volume level changing makes noise on outputs

    ivan mercier
    Hi, I'm trying to use TLV320AIC3104 as Head Phones and Speakers Audio codec. My problem is about changing independently audio output levels. I can't tune the level with DAC level control (with soft stepping) because it will change both signal levels. So I decide to use...
    on Sep 19, 2011

  • Forum Post: PurePath Studio TLV320AIC3254 'Example Process Flows’

    Brian Weir
    I am trying to develop a product using the AIC3254. I have PurePath Studio v5.95 and a TLV320AIC3254 EVM. I am particularly interested in the processes listed in the ‘Example Process Flows’ folder such as Active Noise Cancelation, Dual Mic Noise Cancelation, AEC Process Flows. I would like...
    on Mar 28, 2012

  • Forum Post: TLV320AIC3254 Producing Unwanted Spectra

    3441533
    Hi, We have configured the CODEC and are passing the I2S data corresponding to a 1KHz sinewave. Sampling rate is 96KHz. We are using both internal LDOs so only a +3V3 power rail is used. We are measuring at the CODEC output pin (LOL) with nothing else on that net. When the output is connected to...
    on Apr 18, 2012

  • Forum Post: Mic input noise with AIC3204 and AIC3254

    kurt57633
    Hello All, I need some assistance in reducing the mic input noise we’re hearing with the TLV320AIC3254 and TLV320AIC3204. It sounds like white noise. I’m using a single-ended mic configuration with 10K input resistors and a headset. It’s not a super high level of noise, but it is...
    on Oct 4, 2010

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