TAS2X63EVM: Pink Noise Tunning

Mukesh Prajapati

Part Number: TAS2X63EVM

Hi,

I'm having the following questions regarding pink noise tunning.

Q1. From where I can find the various pink noise tracks? Please share if there are any specific track.

Q2. Which are the recommended software for audio audio visualization that can be used in this application.

Q3. Based on the Pink noise response curve we need adjust our EQ to match the pink noise response curve of our audio device with the reference device? Please correct me I have understood wrong.

Q4. can we use the micro phone in the below link or any specific microphone recommendation that can be used to carry out this experiment.

Micro phone link: https://www.amazon.in/Maono-AU-410-Clip-Lavalier-Microphone/dp/B07R9YXY17/ref=asc_df_B07R9YXY17/?tag=googleshopdes-21&linkCode=df0&hvadid=396989623905&hvpos=&hvnetw=g&hvrand=3894005866139462858&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9062274&hvtargid=pla-826715720321&psc=1&ext_vrnc=hi

Thank You!

Best regards,

Mukesh Prajapati

over 2 years ago

0 Ivan Salazar over 2 years ago

TI__Guru** 110925 points

Hi Mukesh,

You can use the pink noise files included in this link (the link will expire so let me know if you need me to reupload)
1. Link: https://tidrive.ext.ti.com/u/l1BqYFhQak-FUGpn/f63557ae-43dc-4e7b-95ea-14fdcd82eaf4?l
2. Access code: 5k2Zg5u/
Audacity is usually a good tool for audio testing, you can inspect and create audio files with it. Other similar tools are GoldWave and Adobe Audition. Room EQ is used for testing the SPL response of the speaker, and it can also be used to generate estimated EQ parameters for flatter response.
Let me clarify on this. Using the pink files you'll have a random quasi-uniform content across all frequencies, with a bit more energy at the low frequencies. What you'll do while playing these files is trying to make the response as flat as possible, using the EQ to attenuate at higher level regions and boosting at lower level regions. Please notice there is a default 150Hz high pass filter as part of the smart amp configuration.
It is recommended to use a calibrated microphone; these types of mics have a calibration file associated to compensate for the capture non-linearities. You can refer to a microphone like this: Amazon.com: Dayton Audio UMM-6 USB Measurement Microphone : Musical Instruments

Best regards,
-Ivan Salazar
Applications Engineer

0 Mukesh Prajapati over 2 years ago in reply to Ivan Salazar

Prodigy 150 points

Hi,

Can we use the microphone in the given the below link at place of recommended one?
Link: https://www.amazon.in/Behringer-ECM8000-Ultra-Linear-Measurement-Microphone/dp/B000HT4RSA/ref=sr_1_5?crid=25HAWH269HWQY&keywords=measurement+microphone&qid=1679914420&sprefix=measurement+mic%2Caps%2C297&sr=8-5

Best regards,
Mukesh Prajapati

8779496044

0 Jeff McPherson over 2 years ago in reply to Mukesh Prajapati

TI__Mastermind 48215 points

Hi Mukesh,

That microphone is good for applications in the field, not necessarily test and measurement because it seems to like access to a calibration file. You want the calibration file because it allows your measurement software to adjust for the frequency response of the exact microphone you have to account for manufacturing variations. Any measurement microphone with a calibration file will do.

Best regards,

Jeff McPherson