I wonder if Azimuth Correction in RX would deal with this.
From: Association for Recorded Sound Discussion List <[log in to unmask]> On Behalf Of Chris Brady
Sent: Wednesday, October 21, 2020 10:21 AM
To: [log in to unmask]
Subject: Re: [ARSCLIST] Delayed Channels on Cassette Tapes
John - great - thank you. I'll try all of this. I don't think that its print through because the issue is consistent. Chris B.
On 21/10/2020, John Gledhill <[log in to unmask]> wrote:
> Forgot to add - insert the measure delay into the start of the
> preceding channel
> I doubt it is a micro second -
> If the delay is constant here is what you can do Split the stereo
> track to mono use "analyze ->splot spectrum-and use the
> autocorrelation get rid of the grid if the delay is constant you
> should see a sharp peak export the date and you can zero in on the
> delay with the largest peak - artificially 0.1 second in the sample I
> If the delay is not constant the peak will be smeared so pic the
> midpoint or throw one channel away or save it separately if it is
> smeared over too wide a time distribution
> On 10/21/2020 8:34 AM, Chris Brady wrote:
>> We are digitising some cassette tapes using Audacity.. A batch of
>> them are stereo, however they have exaggerated separation of the
>> channels (perhaps they need normalisation?), and one channel is a
>> microsecond behind the other. We don't actually need stereo, amd have
>> tried to merge the channels into mono. But this sounds dreadful - the
>> speech part sounds OK, but the music is very 'echo-ie).
>> Another batch have delays from one channel to the other measuring in
>> seconds. How can we time-shift one channel to match the other one?
>> Thanks - Chris B.
> John Gledhill
> BIT WORKS Inc.
> 905 881 2733
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