Re: MIDI: assigning instr'ments to ranges of notes

Date	1997-08-12 14:52
From	jpff@maths.bath.ac.uk
Subject	Re: MIDI: assigning instr'ments to ranges of notes
	Message written at 12 Aug 1997 11:15:22 +0100 --- Copy of mail to master@internexus.net --- In-reply-to: (message from Laszlo Vecsey on Sat, 9 Aug 1997 09:02:58 -0400 (EDT)) References: My suggestiin is NOT to start hacking the source. i am trying to test the 3.47 version which has instructions for mapping MIDI instruments to Csound instruments. All I need is a little more time and someone to test it! Version 3.47 is a major change. There are a host of new opcodes, mainly to do with MIDI, and a great deal of internal changes for MIDI. I will try to get together some notes on the changes soon. ==John Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa10718; 12 Aug 97 15:51 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa22884; 12 Aug 97 15:50 BST Received: (qmail 16779 invoked from network); 12 Aug 1997 14:50:26 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 12 Aug 1997 14:50:26 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (PAA01658); Tue, 12 Aug 1997 15:30:34 +0100 Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Tue, 12 Aug 97 15:30:22 +0100 Received: from internexus.net [206.152.14.2] by hermes via ESMTP (PAA02732); Tue, 12 Aug 1997 15:30:01 +0100 Received: from localhost (master@localhost) by micro.internexus.net (8.8.6/8.8.4) with SMTP id KAA07323; Tue, 12 Aug 1997 10:29:21 -0400 Date: Tue, 12 Aug 1997 10:29:20 -0400 (EDT) From: Laszlo Vecsey To: Dave Phillips Cc: csound@maths.ex.ac.uk Subject: Re: C question In-Reply-To: <33EF34CD.3E223F75@bright.net> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk On Mon, 11 Aug 1997, Dave Phillips wrote: > I figure someone in this group can help me with this question. I want to > port an application from Turbo C to compile under the GCC in Linux, but > I'm stuck by the include file called conio.h. Is there a direct > replacement in the GCC for that header ? > I know you already found a workaround for conio.h in your application, but I just thought I'd mention to the list since it was brought up that there is a unix conio.h package available at sunsite.unc.edu (I forget the location, but its in the linux software map) the Home Site is: http://www.obh.snafu.de/~marte/friends/fractor/ - lv Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa10971; 12 Aug 97 17:45 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa25017; 12 Aug 97 17:44 BST Received: (qmail 22913 invoked from network); 12 Aug 1997 16:44:40 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 12 Aug 1997 16:44:40 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (RAA09398); Tue, 12 Aug 1997 17:23:27 +0100 Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Tue, 12 Aug 97 17:23:17 +0100 Received: from qmailr@pat.bath.ac.uk [138.38.32.2] by hermes via SMTP (RAA09807); Tue, 12 Aug 1997 17:23:11 +0100 From: jpff@maths.bath.ac.uk Message-Id: <199708121623.RAA09807@hermes> Received: (qmail 21670 invoked from network); 12 Aug 1997 16:23:52 -0000 Received: from omphalos.maths.bath.ac.uk (HELO maths.Bath.AC.UK) (mmdf@138.38.99.25) by pat.bath.ac.uk with SMTP; 12 Aug 1997 16:23:52 -0000 To: james@maths.ex.ac.uk Cc: csound@maths.ex.ac.uk In-Reply-To: <16167.199708120853@zeno.maths.exeter.ac.uk> (james@maths.ex.ac.uk) Subject: Re: admin stuff References: <16167.199708120853@zeno.maths.exeter.ac.uk> Date: Tue, 12 Aug 97 17:24:29 BST Source-Info: From (or Sender) name not authenticated. Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk On the other hand I still have all the messages sent to the digest list for that period. If anyone really wants them..... ==John Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa11256; 12 Aug 97 20:52 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa27682; 12 Aug 97 20:51 BST Received: (qmail 29162 invoked from network); 12 Aug 1997 19:51:31 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 12 Aug 1997 19:51:31 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (UAA16995); Tue, 12 Aug 1997 20:34:43 +0100 Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Tue, 12 Aug 97 20:34:34 +0100 Received: from root@ferrari.sfu.ca [142.58.110.11] by hermes via ESMTP (UAA17046); Tue, 12 Aug 1997 20:34:31 +0100 Received: from 142.58.123.35 (rs35-annex3.sfu.ca [142.58.123.35]) by ferrari.sfu.ca with SMTP (8.8.5/SFU-2.7H) id MAA27360 (from dcross@sfu.ca); Tue, 12 Aug 1997 12:35:04 -0700 (PDT) Message-Id: <33F0BACF.375C@sfu.ca> Date: Tue, 12 Aug 1997 12:34:41 -0700 From: doug cross X-Mailer: Mozilla 3.01 (Macintosh; I; PPC) Mime-Version: 1.0 To: Burton Alexandre Cc: csound@maths.ex.ac.uk Subject: simple problem References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk Hello all: i have been playing around with this orc and sco to produce some sound examples and i've found something curious. when i ask for a sweep between 800hz and 150000hz there is a strange folding over of the sound.(starts to play backwards). I've found a number below 10000hz avoids this problem but I'm just a bit confused. ;sweep.orc ;------------------------------- sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 instr 1 iattack = .01 irelease = .10 idur = p3 iamp = p4 isweepstart = p5 isweepend = p6 ibandwidth = p7 ibalance = p8 kamp linen iamp, iattack, idur, irelease ksweep line isweepstart, idur, isweepend asig oscil iamp, ksweep, 3 afilt reson asig, ksweep, ibandwidth arampsig = kamp * afilt out arampsig * ibalance ;, arampsig * (1 - ibalance);disabled for mono file endin ;sweep.sco ;------------------------------- f3 0 8192 7 -1 4096 1 4096 -1 ; -- triangle i1 0 5 2.2 800 15000 10 .5;c e Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa11316; 12 Aug 97 21:56 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa28436; 12 Aug 97 21:55 BST Received: (qmail 1016 invoked from network); 12 Aug 1997 20:55:41 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 12 Aug 1997 20:55:41 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (VAA18870); Tue, 12 Aug 1997 21:40:51 +0100 Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Tue, 12 Aug 97 21:40:40 +0100 Received: from root@scylla.charybdis.com [207.207.44.2] by hermes via ESMTP (VAA18736); Tue, 12 Aug 1997 21:40:35 +0100 Received: from ares.charybdis.com (ares.charybdis.com [207.207.44.53]) by scylla.charybdis.com (8.7.5/8.7.3) with SMTP id OAA13863 for ; Tue, 12 Aug 1997 14:42:34 -0500 Message-Id: <3.0.1.32.19970812154114.006a8450@charybdis.com> X-Sender: hdan@charybdis.com X-Mailer: Windows Eudora Light Version 3.0.1 (32) Date: Tue, 12 Aug 1997 15:41:14 -0500 To: csound@maths.ex.ac.uk From: Dan Higdon Subject: Re: simple problem In-Reply-To: <33F0BACF.375C@sfu.ca> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk At 12:34 PM 8/12/97 -0700, Doug wrote: >i have been playing around with this orc and sco to produce some sound >examples and i've found something curious. when i ask for a sweep >between 800hz and 150000hz there is a strange folding over of the >sound.(starts to play backwards). I've found a number below 10000hz >avoids this problem but I'm just a bit confused. I think the effect you're hearing is called "aliasing". Due to a limitation in digital signal processing, any frequency above 1/2 the sample rate will not be represented properly. In this case, anything above about 22kz will flake out. Since you're using a non-sinewave input, any overtones in the signal can't be above 22khz either, or they will alias as well. Aliasing can cause unusual artifacts - that "folding over" you describe is typical. So - stick with sounds in the human hearing range! :-) ------------------------------- Dan Higdon (hdan@charybdis.com) http://www.charybdis.com/~hdan Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa11918; 13 Aug 97 6:13 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa08078; 13 Aug 97 6:12 BST Received: (qmail 11526 invoked from network); 13 Aug 1997 05:12:22 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 13 Aug 1997 05:12:22 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (GAA04660); Wed, 13 Aug 1997 06:05:03 +0100 Received: from exub by maths.exeter.ac.uk; Wed, 13 Aug 97 06:04:53 +0100 Received: from chasque.apc.org [206.99.54.1] by exub via ESMTP (GAA18480); Wed, 13 Aug 1997 06:05:20 +0100 Received: from default (a79.chasque.apc.org [206.99.54.79]) by chasque.apc.org (8.8.5/8.8.5) with SMTP id CAA07688 for ; Wed, 13 Aug 1997 02:02:23 +0300 (GMT) Message-Id: <1.5.4.32.19970813050204.0071ce18@chasque.apc.org> X-Sender: psotuyo@chasque.apc.org X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Wed, 13 Aug 1997 02:02:04 -0300 To: Csound Mailing List From: Pablo Sotuyo Subject: Ihold/Turnoff related msg. Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk Hi everybody, Knowing there will be a 3.47 version of Csound (Thanks to all who were concerned ;) ) I would like it to get the ihold revised/modified to let the instrument stay poliphonic and not becomes monophonic as it behaves in 3.46 version of Csound (win) when you use it. Or at least include this behaviour in the next Csound Manual. Thank you all in advance. Pablo. ----------------------------------------------- Pablo Sotuyo Blanco Composer - French Horn Player 4th French Horn of the City Hall Symphonic Band Luppo Music (Sounds & Casuals) Editor ----------------------------------------------- Tomas de Tezanos 1329 CP 11.300 Buceo Montevideo - Uruguay mailto:psotuyo@chasque.apc.org ----------------------------------------------- Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa12032; 13 Aug 97 8:26 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa09435; 13 Aug 97 8:25 BST Received: (qmail 13536 invoked from network); 13 Aug 1997 07:25:48 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 13 Aug 1997 07:25:48 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (IAA07124); Wed, 13 Aug 1997 08:16:20 +0100 Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Wed, 13 Aug 97 08:16:10 +0100 Received: from root@[142.58.110.11] by hermes via ESMTP (IAA07243); Wed, 13 Aug 1997 08:16:05 +0100 Received: from 142.58.123.37 (rs37-annex3.sfu.ca [142.58.123.37]) by ferrari.sfu.ca with SMTP (8.8.5/SFU-2.7H) id AAA07782 (from dcross@sfu.ca); Wed, 13 Aug 1997 00:16:05 -0700 (PDT) Message-Id: <33F15EE2.4C05@sfu.ca> Date: Wed, 13 Aug 1997 00:14:44 -0700 From: doug cross X-Mailer: Mozilla 3.01 (Macintosh; I; PPC) Mime-Version: 1.0 To: "Brown, Chris G" Cc: csound@maths.ex.ac.uk Subject: Re: simple problem References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk thanks all for your help. i may be clearer on the subject now but i'm looking at the mail i sent and i've made a mistake. 150000hz should be 15000hz. anything above 22000hz will present problems i understand but i'm not wanting to go that high and yet i am experiencing some foldover and aliasing. doug Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa12123; 13 Aug 97 9:49 BST Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa11066; 13 Aug 97 9:49 BST Received: (qmail 16125 invoked from network); 13 Aug 1997 08:49:15 -0000 Received: from hermes.ex.ac.uk (144.173.6.14) by pat.bath.ac.uk with SMTP; 13 Aug 1997 08:49:15 -0000 Received: from noether [144.173.8.10] by hermes via SMTP (JAA10173); Wed, 13 Aug 1997 09:37:26 +0100 Received: from zeno by maths.exeter.ac.uk; Wed, 13 Aug 97 09:37:13 +0100 From: james@maths.ex.ac.uk Message-Id: <23044.199708130837@zeno.maths.exeter.ac.uk> Subject: Re: simple problem To: csound@maths.ex.ac.uk Date: Wed, 13 Aug 1997 09:37:12 +0100 (BST) X-Mailer: ELM [version 2.4 PL25] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1496 Sender: owner-csound-outgoing@maths.ex.ac.uk Precedence: bulk owner-csound-outgoing wrote >From owner-csound-outgoing Wed Aug 13 07:55:24 1997 From: owner-csound-outgoing Date: Wed, 13 Aug 97 07:55:24 GMT Message-Id: <6767.9708130755@maths.exeter.ac.uk> To: owner-csound-outgoing Subject: BOUNCE Csound: Non-member submission from ["Tobias Kunze" ] >From tkunze@ulysses.stanford.edu Wed Aug 13 08:55:19 1997 remote from Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Wed, 13 Aug 97 08:55:19 +0100 Received: from ulysses.Stanford.EDU [36.49.0.124] by hermes via ESMTP (IAA08196); Wed, 13 Aug 1997 08:55:15 +0100 Received: (from tkunze@localhost) by ulysses.stanford.edu (950413.SGI.8.6.12/950213.SGI.AUTOCF) id AAA19705; Wed, 13 Aug 1997 00:57:05 -0700 From: "Tobias Kunze" Message-Id: <9708130057.ZM19703@ulysses.stanford.edu> Date: Wed, 13 Aug 1997 00:57:04 -0700 In-Reply-To: doug cross "Re: simple problem" (Aug 13, 12:14am) References: <33F15EE2.4C05@sfu.ca> Reply-To: t@ulysses.Stanford.EDU X-Url: http://www.stanford.edu/~tkunze X-Mailer: Z-Mail (3.2.3 08feb96 MediaMail) To: doug cross Subject: Re: simple problem Cc: csound Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii if you actually add an "endin" to your orc, you get a clean 800-15000 Hz sweep. at least on my machine (sgi, csound 3.45). -Tobias -- James Andrews, maths CDO, ext.3977