audio "decodeAudioData" api is used in the test.html.

Tested the issue on chrome reported version 64.0.3282.186 using Windows-10 with steps mentioned below:
1) Launched chrome reported version, dragged and dropped the file provided in comment#0 and clicked on OK
2) Opened chrome task manager and observed memory usage for "Tab: test.html"
3) Able to see the memory value keep on fluctuating

@Reporter: Please find the attached screen cast for your reference and let us know if you are also observing the same issue which i have captured in attached screen cast, please provide your feedback on it which helps us in further triaging it, if possible could you please provide the screen 

Thanks!

Deleted: 818411.mp4 2.6 MB

	818411.mp4 2.6 MB View Download

yes, it's the same screen. it has fluctuations but ends with high memory usage.

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Able to reproduce the issue on reported chrome version 64.0.3282.186 and on the latest chrome version 67.0.3362.0 using Windows-10. As the issue is seen from M60(60.0.3072.0) considering it as non-regression and marking it as Untriaged.
Note: Tested the issue on Mac 10.12.6 and Ubuntu 14.04, on Mac and Ubuntu did't observed high memory usage. But on Windows-10 observed memory usage of ~819,868k.

Thanks!

I see high memory usage with ToT chromium on linux.

For some reason the AudioBuffer created by decodeAudioData isn't getting collected.