60 cycle "heartbeat" static sound in recording - how to isolate and remove?

[cj.flac]

I have a Tascam DR-40X that I ought to throw in the trash.

Yesterday, I used it in place of my Deity PR-2.
(The Deity's thin plastic inner casing around the battery has cracked, making the positive terminal for one of the battery slots loose and warm to the touch. I may contact Deity for warranty coverage).

The last few times I have tried recording with it, it's introduced a static "ticking" sound pervasive throughout. It's probably emanating from the screen ticking off the seconds. Even if I were to troubleshoot this by setting the screen to turn off after a certain amount of time, that shouldn't be an issue on a field recorder at all, so that's something to contact Tascam support about, too.

In the meantime, here's a sample of what this sounds like. How would I approach removing or mitigating this in something like iZotope?

[robgronotte]

I'm pretty good at using iZotope RX, possibly have used it more than anyone else here, and I don't think that would be fixable with that program.  Highly doubtful that it could even be significantly improved by any program I'm familiar with.  It sounds much worse than I had expected from your description.

[nulldogmas]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

[EmRR]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

The 'find similar' option may select most or all of them!

[robgronotte]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

I don't even know what you're removing completely. There are at least two layers of noise going on there, maybe three. It's definitely not just clicks - I hear more noise than music.

Just listened again, and I don't hear anything I would call clicks. It sounds like a continuous low frequency rumble and then loud thumps about once per second on top of that. If you really can easily fix that sample I'll definitely be impressed.

[nulldogmas]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

I don't even know what you're removing completely. There are at least two layers of noise going on there, maybe three. It's definitely not just clicks - I hear more noise than music.

Just listened again, and I don't hear anything I would call clicks. It sounds like a continuous low frequency rumble and then loud thumps about once per second on top of that. If you really can easily fix that sample I'll definitely be impressed.

The low rumble is a separate issue, and not what the OP was asking about, so I didn't try to address that. The "thumps" can indeed be easily removed with Spectral Repair, before/after samples attached.

[robgronotte]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

I don't even know what you're removing completely. There are at least two layers of noise going on there, maybe three. It's definitely not just clicks - I hear more noise than music.

Just listened again, and I don't hear anything I would call clicks. It sounds like a continuous low frequency rumble and then loud thumps about once per second on top of that. If you really can easily fix that sample I'll definitely be impressed.

The low rumble is a separate issue, and not what the OP was asking about, so I didn't try to address that. The "thumps" can indeed be easily removed with Spectral Repair, before/after samples attached.

OP, what is the low rumble coming from? That is the worst part of what I heard.