Subject: Re: [AUDITORY] External class compliant sound cards From: Theo Veenker <theo.veenker@xxxxxxxx> Date: Thu, 30 May 2019 12:02:28 +0200 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>On 29/05/19 11:59, Kamil Adiloglu wrote: > Dear list, > I am compiling a list of suitable sound cards for a mobile real-time=20 > experimental setup. There are some criteria that such sound card should= =20 > fulfil: > - External sound card: We have a mini PC with an on-board sound chip. W= e=20 > want to use an external sound card with a decent sound quality. Our min= i=20 > PC has USB-2, USB-3, USB-C (Thunderbolt 3) connections. >=20 > - Class compliance: We have a real-time signal processing platform,=20 > which runs on Linux (Actually it also supports Windows and Mac, but we=20 > prefer Linux). Therefore we need a sound card, which Linux can operate.= =20 > Manufacturers usually do not officially support Linux, but there are=20 > some, which run under Linux, because they are class compliant and do no= t=20 > require a dedicated driver. >=20 > - At least 4 (preferably 6) analog (identical) inputs and at least 2=20 > analog (identical) outputs >=20 > - Lower sampling rates: As we will do real-time signal processing, we=20 > prefer lower sampling rates for the sake of computational complexity.=20 > Therefore, ideally we would like to have a sound card, which supports=20 > even 16kHz, but 32kHz also OK. If a low input to output latency is important in your use case then it=20 might be beneficial to select the highest sampling rate and maximum=20 number of channels (for instance 8ch @xxxxxxxx 96kHz or even 192kHz) on both=20 sides and down/upsample on the fly (assuming your mini PC can keep up=20 with of course). >=20 > I know that these criteria are now easy to fulfil. So far, I couldn't=20 > find any sound card, which fulfils all the requirements. In the worst=20 > case, we can sacrifice the last requirement and downsample our sound=20 > input before processing, but it is a good-to-have one. >=20 > We would appreciate any suggestion. Thank you in advance. >=20 > Best Regards, > Kamil Adiloglu >=20 >=20 > --=20 > Dr. Kamil Adilo=C4=9Flu > Forschung und Entwicklung >=20 > H=C3=B6rTech gGmbH > Marie-Curie-Str. 2 > D-26129 Oldenburg > Germany > Phone: +49 441 2172-215 > Fax: +49 441 2172-250 > Email:k.adiloglu@xxxxxxxx <mailto:k.adiloglu@xxxxxxxx> >=20 > www.hoertech.de <http://www.hoertech.de> >=20 > HRB 5035, AG Oldenburg, Gesch=C3=A4ftsf=C3=BChrer: Sebastian Quirandt > -----------------------------------------------------------------------= --------- > H=C3=B6rTech gGmbH ist zertifiziert nach DIN EN ISO 13485 > -----------------------------------------------------------------------= --------- >=20 > H=C3=B6rTech gGmbH ist Partner im Exzellenzcluster Hearing4all > www.hearing4all.eu <http://www.hearing4all.eu> > -----------------------------------------------------------------------= --------- >=20 > Der Inhalt dieser E-Mail ist ausschlie=C3=9Flich f=C3=BCr den/die bezei= chneten Adressaten bestimmt. > Wenn Sie nicht der vorgesehene Adressat dieser E-Mail oder dessen Vertr= eter sein sollten, > beachten Sie bitte, dass jede Form der Kenntnisnahme, Ver=C3=B6ffentlic= hung, Vervielf=C3=A4ltigung > oder Weitergabe des Inhalts dieser E-Mail unzul=C3=A4ssig ist. Bitte se= tzen Sie sich in diesem > Fall mit dem Absender der E-Mail in Verbindung. >=20 --=20 Theo Veenker | Beexy - Behavioral Experiment Software +31(0)524-541531 | +31(0)6-42525777 mobile theo.veenker@xxxxxxxx | www.beexy.nl