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Mon, 08 Jun 2020 17:13:09 +0200 To: sox-users References: <72549934-94d1-6b25-19e8-54cef71361f6@gmx.de> <88bb31d9-33a9-1b91-0717-395627a6a196@gmx.de> From: "Dr. Thomas Tensi" Message-ID: Date: Mon, 8 Jun 2020 17:13:07 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: X-Provags-ID: V03:K1:6S8KyRhG2cd6ISgg1j0oKuz3SXnCOHemKnHWGqGclOGDPqVXTQL gF35vCTwOBAaRfyeMlEhjO688T6hmASbojTX7aQgm51EHCD3LmX10GjaZtiz8VonMKrQA0s l5ZE2r8YvhZalTrX2l0QHf1yYzTZNdDJV3oUqB5w9MNKyI78CWLy31hsTaG2rH/ATplm66m Qdtx4sdJ9spTnPlK/1hcw== X-UI-Out-Filterresults: notjunk:1;V03:K0:Xb3g+dPoEFs=:FLi6Rd0IXOlak3x+6qPSVP 301Z3PAOYEZGSB0rEyX+quMJ4toKaWLvSviBOpxYuK9XKzS+BKOTSchKS7ST1Iq0BQfn7s5oH ZqZAkA1HAsukGKTzg7gsNOtD9ADvXxXbBUE2YfZJa0vaMXU5BBnCNzmZ5uMwlNrCWdVchiSsq JErgtS+/raP8q5GwdrZZAmGbcIMrXe8G5az3YnEGIJefQ2Cf8iXyZi901fSuGYRo3sIWA/1bM meWBApXMxssAEBwWtusUJXaHpeLmBaDSXcw9pcJ/Q+36MOyau8u2WZ7dnF4abmLy9jZkZd8jj 3A7wa0qDWdgCoROTcudLYKX0fO50gqhNwKECerdK/lLwD4paqoSD+rBr9Urc6Gm8EbW6loyce 6mdKkhMw8jt7MGDb8L4J/9ZjxnVo8t/9g5VxIGkSVOydvDr7r3utZYCTJroVd6NnXvYu74UQ0 /6xxZsAImjJJJXPG0g3pb+f3NQ9eeLqSOhGuqzt61xmmbE/T7b1hLPproJReLKRJ8ktaP+J7M +ti9FNWgP+HDwz+HvHTNvw8PtkmKGo6U5uEw0Qg+zOeCIy4GaZi9CrY+AlQjVObyxKPEzQvI5 2w7O/oM/59j3aWjJnjWNwV8mwIPA4JMJreSPzS24xDW/IYHZpYJLRzbP/57/7RV3hVxlRwoDz +vy1m9DgpI4NR5vEjh5eVA5YK4M0akpnSjmUw1KGbIvhiN/EeTqhO7yhiaylu1wL4ihvxJQIS vWUh1KlxJDAQ2WEymk4jDXausvIhjCMFEJzVyRBM2+Mz3ofoCg+yft8vOCBIq6oJqiUnZtnW0 FqvK6byb0FBjX0Ue5i010SsTnREQ7fjaZf/9cOiRDXSBmJWw5h1YCP7Iv0gtm7syhXS3nyhrQ 4BHl2lbSjg1BJE9sKEUBWYkF0PJV9zwQnfLywH6tJ01CGmdSJtUgzgTzZHviHYD+70TLq+yWC n6Dks4qpxKZZHHjqjxUx4GLIAhUZ7TCKEjpCtWhncH4+YbXsdm1/vVaHu1NfQhIpv9VR0aBLN Uko/f22ZLEYsIDLGVBZ3eSvLioYUAZByI9+EhwmwBNkA5KE3IIy9CQthaeD1hZvtzhlErg0G3 ZgHJeUhePca9Bp1DYNoNJiLadMGkLIgt6RSlFvklKzL60CjWLSxNYMjUqKTbvrsqbU3W02U0y hUNVj8xlrZwcWGRsnAqLLfOSKdlCd7o+jjZ3sRxQyJvvb3L2EMkPfhrib0DCUu+Un4mjLmffe wPiLmHaZ4peE987rC X-Headers-End: 1jiJSo-00Ga7O-4H Subject: Re: Sine wave in an envelope X-BeenThere: sox-users@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: thomas@tensi.eu, sox-users@lists.sourceforge.net Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: sox-users-bounces@lists.sourceforge.net Hello Jeff, you wrote: > Actually I'll have both mono and stereo cases, but was asking > about the stereo case. Of course I can split the stereo into two mono > files. I was hoping to do it in one line, which was the real question > here -- the synth effect documentation says it can operate differently > on different channels but I couldn't figure how to make that work. Okay, I see what you mean in the documentation for "synth" where it says "Audio for each channel in a multi-channel audio file can be synthesised independently". Hmm. I haven't checked the code, but my gut feeling is that this multiple channel setting of the synth effect only works for _creating_ waves in different channels. As soon as you don't have "create" as the combine operation (in your case it is "amod)" it is hard to find out for sox whether the combine operator should apply to the input or some previous waveform. In general and in my opinion, sox is not very good at doing some specific processing on single channels of an input file as in your case. One similar example would be a parallel compression ("New York City compression") where a compressed signal is combined with the original: as far as I know this only can be done with a temporary file. Best regards, Thomas _______________________________________________ Sox-users mailing list Sox-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sox-users