Finally, music we can buy in 768 khz sampling rates.

[egellings]

Yes, proper 768 khz music. From Sound Liason which does make very high quality recordings. I'm not aware of commercial offerings at this rate before though maybe I just missed a few. Alas it is only 24 bit instead of proper 32 bit recording.

Carmen Gomes Inc. - RAY! | High Resolution Audio Downloads at Sound Liaison

Buy Carmen Gomes Inc. - RAY! and other great high-res downloads from Sound Liaison. All audio formats just starting from €17.95.

www.soundliaison.com

You can download a free sample track which clocks in just under a gigabyte in size. Pleased to see if you've purchased it at a lower rez, they offer to deduct the cost of that from buying again in the higher rez format. Of course they are transcribing the master tapes from their Studer A80 RTR.

Here is a quote from a promotional email as I'm on their mailing list.

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Ray! in 768kHz

The RME company is highly regarded by audio professionals. Before we started working with Merging, RME was our converter of choice. So when we got offered to test the RME ADI-2 FS, a compact 2-channel AD/DA converter we gladly approved. The first comparison with our Merging Anubis was immediately positive. Lots of definition, a beautiful soundstage with perfect placement. And after powering it with the Ferrum Hypsos external power supply, a sense of calm and control was added to the experience. This is clearly a serious converter. The RME has a maximum sample rate of 768kHz. To really see what the RME ADI-2 is capable off, we created a 768kHz/24bit file straight from our Studer A80 tape recorder playing the ¼" reel to reel master tape from our latest release. Listening and A/B comparing with the Studer the result is quite convincing. In our opinion the sound is very close to the analog master tape. We would like to share the results with you. Therefore we have made one 768kHz track from the album available for free for a limited time period. The only favor we ask in return, is that you give us a bit of feedback; Is this a way forward? Do you also hear an even greater sense of realism compared to the lower formats or are you perfectly happy with the formats you have been using so far? For anyone who would like to purchase the entire album in 768kHz but has already purchased the album in a lower resolution in the past week, the price difference will be refunded. Send us an email and you will receive a refund within a few days. Happy New Year and best wishes! The Sound Liaison team; Frans & Peter

Why on earth such a high sample rate for 20 to 20,000Hz content?

 

[Bwaslo]

Yes, proper 768 khz music. From Sound Liason which does make very high quality recordings. I'm not aware of commercial offerings at this rate before though maybe I just missed a few. Alas it is only 24 bit instead of proper 32 bit recording.

Carmen Gomes Inc. - RAY! | High Resolution Audio Downloads at Sound Liaison

Buy Carmen Gomes Inc. - RAY! and other great high-res downloads from Sound Liaison. All audio formats just starting from €17.95.

www.soundliaison.com

You can download a free sample track which clocks in just under a gigabyte in size. Pleased to see if you've purchased it at a lower rez, they offer to deduct the cost of that from buying again in the higher rez format. Of course they are transcribing the master tapes from their Studer A80 RTR.

Here is a quote from a promotional email as I'm on their mailing list.

​ ​

Ray! in 768kHz

The RME company is highly regarded by audio professionals. Before we started working with Merging, RME was our converter of choice. So when we got offered to test the RME ADI-2 FS, a compact 2-channel AD/DA converter we gladly approved. The first comparison with our Merging Anubis was immediately positive. Lots of definition, a beautiful soundstage with perfect placement. And after powering it with the Ferrum Hypsos external power supply, a sense of calm and control was added to the experience. This is clearly a serious converter. The RME has a maximum sample rate of 768kHz. To really see what the RME ADI-2 is capable off, we created a 768kHz/24bit file straight from our Studer A80 tape recorder playing the ¼" reel to reel master tape from our latest release. Listening and A/B comparing with the Studer the result is quite convincing. In our opinion the sound is very close to the analog master tape. We would like to share the results with you. Therefore we have made one 768kHz track from the album available for free for a limited time period. The only favor we ask in return, is that you give us a bit of feedback; Is this a way forward? Do you also hear an even greater sense of realism compared to the lower formats or are you perfectly happy with the formats you have been using so far? For anyone who would like to purchase the entire album in 768kHz but has already purchased the album in a lower resolution in the past week, the price difference will be refunded. Send us an email and you will receive a refund within a few days. Happy New Year and best wishes! The Sound Liaison team; Frans & Peter

Isn't the bandwidth of recoded tape hard-limited by the bias frequency used during recording? Does anyone know what bias frequency the Studer A80 uses, is it above 384kHz?
And of course the gap width of the record and play heads, with tape speed, forms another limit on the minimum wavelength that can be transcribed. R2R tape is inherently bandlimited beyond what EQ can even help.

 

[levimax]

Isn't the bandwidth of recoded tape hard-limited by the bias frequency used during recording? Does anyone know what bias frequency the Studer A80 uses, is it above 384kHz?
And of course the gap width of the record and play heads, with tape speed, forms another limit on the minimum wavelength that can be transcribed. R2R tape is inherently bandlimited beyond what EQ can even help.

See below Studer A80 specs.... FR 30Hz to 18 Khz -2dB at 30 ips. Bias frequency 240 kHz

 

[krabapple]

So, to capture that bias frequency (which is important to capture for the Plangent process, if perhaps nothing else) you'll need an ADC with a sample rate of at least 480kHz.

 

[Blumlein 88]

So, to capture that bias frequency (which is important to capture for the Plangent process, if perhaps nothing else) you'll need an ADC with a sample rate of at least 480kHz.

Do the following electronics convey the bias frequency to the analog outputs? I seem to recall the A80 rolled off around 200 khz in that area.

 

[TunaBug]

There was a thread a few years ago where some guy with a music publishing company was digitizing tapes using similar sampling rates, and he posted an FFT with a high peak at some ultrasonic frequency. A lot of us scratched heads for a few days wondering what problem he had in his digitization chain that would cause that peak, until I asked what the original tapes were recorded on, looked up the bias frequency, and pointed out that it matched.

 

[krabapple]

Plangent uses wide-bandwidth custom tape playback gear. See their website I linked to.