From owner-freebsd-multimedia@freebsd.org Mon Mar 29 08:55:59 2021 Return-Path: Delivered-To: freebsd-multimedia@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 09F455C1D04 for ; Mon, 29 Mar 2021 08:55:59 +0000 (UTC) (envelope-from timsofteng@gmail.com) Received: from mail-qv1-xf2f.google.com (mail-qv1-xf2f.google.com [IPv6:2607:f8b0:4864:20::f2f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F85yk27GMz4qDb for ; Mon, 29 Mar 2021 08:55:58 +0000 (UTC) (envelope-from timsofteng@gmail.com) Received: by mail-qv1-xf2f.google.com with SMTP id iu14so502474qvb.4 for ; Mon, 29 Mar 2021 01:55:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=biqh6QsxR9wbrposJK6kVqLTnpfIrFfpaIo0bHzKpRo=; b=l9GcyJHs5fUa2P04JSh9i8F00ZdYkjGn06gjbr2WweYnlJIeYaJLumLcie8lcHP42e uhjTizpULvsm2Z+gZ7GFU0C5TCs71HZUyKD/cpKmhjG5niwR00yAHHp4zPGhk/39dV8M 1+ug21/u64pE77ZxttGpwNBXEFAdALa8MItYhyK2BQn/qg6NLtnMSrSJbLHIWF/dwXgg 6yrNympM9T9PzuNvu68zY+AKDbJlY83pqS9Gg4IvpyZSqb8ZljC12RPFfNQSBXCoHEOC gLoEzXuaAsaq1fMVIg9nBz2UwFlk4GwNP6eYZ4L38NL6hOAmRxybGMygDN+lPKkTYDld T6FA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=biqh6QsxR9wbrposJK6kVqLTnpfIrFfpaIo0bHzKpRo=; b=ukXaS/P3M83TJJNQD4BrF515t6oBbITqboG84JUbaOshCJu5Il5DU2ZiG1tpvuIwKv FNG4iwHx6HNVt5uEdn8TJrd0xXWRWkgjkftRXOK2QJkJsIvRnt5wMogwhldWF7NDocBB w/4W+8UK8hIOOcaCn3kMUXHyIhDLOgVyr5w1pK/s6qnpUOPLFILdGhOW9Ro2JU0XHlQj 3UkNphmMZpNKXl8Il22/1ibI/9U7JUmvGNELf9KSi3VYpCbko41nZSYMr4DJqfF35pAl Be8pUTNlNWLp+2f8LX9u+C7lEAbp2HL47/Q8fSo0tdTSGmoGZkWpNAmT9JHodY3zGEXp CyQg== X-Gm-Message-State: AOAM530YtFSemCqo47EYaLdninZRGaQYpNc75Nja5l6DclaJe17GNig5 MPW+cHqddRlxIn5ad2gd2xr1b+vt+uDGaguyHfLqVDv8 X-Google-Smtp-Source: ABdhPJxux0FVueLQEzgXemSYnipeJDvJVnBATCNnoGu5h+GAVmF58pj/bL39DZm6RT6BsP/sv69II+DT3Gw64UjRBfE= X-Received: by 2002:a05:6214:4ae:: with SMTP id w14mr23840389qvz.45.1617008157458; Mon, 29 Mar 2021 01:55:57 -0700 (PDT) MIME-Version: 1.0 References: <4938264f-686a-af1a-cb28-f39585b1375a@selasky.org> <69e199f6-a3ac-db3b-c7a1-00001f750624@selasky.org> In-Reply-To: <69e199f6-a3ac-db3b-c7a1-00001f750624@selasky.org> From: Softwafe Engineer Date: Mon, 29 Mar 2021 11:55:46 +0300 Message-ID: Subject: Re: Distorted sound with external usb-device and bitperfect To: Hans Petter Selasky Cc: freebsd-multimedia@freebsd.org X-Rspamd-Queue-Id: 4F85yk27GMz4qDb X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=l9GcyJHs; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of timsofteng@gmail.com designates 2607:f8b0:4864:20::f2f as permitted sender) smtp.mailfrom=timsofteng@gmail.com X-Spamd-Result: default: False [-4.00 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f8b0:4864:20::f2f:from]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-multimedia@freebsd.org]; SPAMHAUS_ZRD(0.00)[2607:f8b0:4864:20::f2f:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::f2f:from]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-multimedia] X-Mailman-Approved-At: Mon, 29 Mar 2021 11:25:32 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.34 X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Mar 2021 08:55:59 -0000 Thanks a lot. What about uadriver? Maybe Motu support more formats but something wrong with driver. Would it be true? I've send question about it to Motu support. =D0=BF=D0=BD, 29 =D0=BC=D0=B0=D1=80. 2021 =D0=B3., 11:52 Hans Petter Selask= y : > On 3/29/21 10:47 AM, Softwafe Engineer wrote: > > So I can't get true bitperfect right? I should convert signal before se= nd > > to card output anyway. > > As long as your USB audio device reports it only supports 32-bit as > native format, then 16-bit bitperfect won't be possible. > > I think in Linux, ALSA automatically does audio format conversions. The > choice is just if your application has to provide a certain format or not= . > > Try to look at "top" under Linux while playing something and find who's > doing the format conversion. > > --HPS >