Thank you for this. I rarely watch or listen to YouTube but this was 
interesting. I even read the comments! :-)

LP playing speeds:

I've rarely encountered speed variations with vinyl LP's. Acoustics and 
early electrical recordings, particularly before standards where 
followed, is another story.



Corey Bailey Audio Engineering

On 4/13/2019 9:03 AM, Richard L. Hess wrote:
> Hi, Doug and Steve,
> This raises the issue: are these variations in orchestra tuning, 
> recording process, or both?
> Cheers,
> Richard
> On 2019-04-12 10:00 p.m., Steve Smolian wrote:
>> Hi, Doug,
>> It's not that I have perfect pitch- I don't.  I do hear differences 
>> in tone, however.  Maybe I only think I do, in some cases, but I'm 
>> certain of it in others.  But I've worked with enough professional 
>> musicians to know that it matters to them, especially string players.
>> Steve
>> -----Original Message-----
>> From: Association for Recorded Sound Discussion List 
>> <[log in to unmask]> On Behalf Of Douglas Pomeroy
>> Sent: Friday, April 12, 2019 9:13 PM
>> To: [log in to unmask]
>> Subject: Re: [ARSCLIST] LP playing speeds
>>   Hi Steve,
>> Years ago I started checking the pitch of every single recording 
>> which came my way.The tape recorders without servo circuitry, like 
>> the Ampex 350 and most non-pro decks are especially difficult to fix. 
>> There is some software available for making gradual corrections over 
>> time, but these programs are not a panacea.
>> I would add that a range of 15 to 20 cents is close the the limit of 
>> human hearing acuity, at least for those of us without perfect pitch. 
>> But I totally agree we should correct alldetectable errors.