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Fri, 17 Jul 2020 10:38:19 +0200 To: sox-users@lists.sourceforge.net References: <875zan9nm5.fsf@lenovo> From: "Dr. Thomas Tensi" Message-ID: <91eb97bf-22f4-9ca4-1731-478d65a0e998@gmx.de> Date: Fri, 17 Jul 2020 10:38:17 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <875zan9nm5.fsf@lenovo> X-Provags-ID: V03:K1:S9eHjcYznAH5VccB2Ld+Ax9CyHRoX818xkT4k/0cT2lK89LohmH y+A3qo160caqwTK2EGkRf2OUQoHybo0aw/MLR6Jg5VfbAGQ9AL0JBKkWdaktnwolHu+r2sm 1P2wFgQtrm8iZ83K8kdTWr8imapiUbNlJcJwK095dGUQ+/dfXpTcIIdz3EaXfVtDvn0Acek Svd5hpUse+73iEQlzVbVg== X-UI-Out-Filterresults: notjunk:1;V03:K0:VQ+W5EdzUIk=:Lvi7uu5UWmbRzMdh9cSoVl D4OPRumWJQX+ZIi26Fd+U6t8mdg69O2g1Vb2ogF9vD6EmIPtud2zulq9c6jFrAiAbtoJKuQLZ qODaNJJ2rY3qBbpzmcl3NYtWmH5tdbFmzLhon1yOQYdl2odAObKh8F7pa+ZaxySeoTY4g+DF8 aL1kzzq6kgDR/BsBuFdwXLnJlPjK1SOxboCHwoQyrCt9Aop7lEl+spWp7rtx2OK65WXPa6qMv PKrQXt3Et+++xI0rt9JxzQd9wNU8pHy/LrRj00OoM5TURXv69+k2v2t3OWn15RjvHkM18mBLE QGhp17nm4WBIYRK9Hn7YgI8jEq30RR0l3wigIbe8yN9ZdFhrwTPvtDlvUvC9+eWRJW50eKVLL Rtx+I3B4WCSHQevdpSa9UWgSYWPHu2XDAIjWL9LiVAeyzCiwDIW4IEyHRJFPDbuRqTXwUW2su ObfS6tDoLset8kcXbpTWFYuMmYiJU1BqCrWBqb3iIUoElmgnzBGqWd7a4LwI4pKV4WvzPtYJV RZBXXqD4DPvSMOpCff9XNYor75r1tqBKilQ1p1QnLD1bGba8Xt1ZKkdSxyTysTm2pmFWws1OS xe5uq+o9iqZo8U89IU8U9wzB5DIE76yeY45sGMfybL5WIfZMsK4V5DPP3YYhn90NKuIIwVWu+ iPlp7sdf1g8dOCDhqwdI7pSumnxU0Hxo17wOqktLDktLKIX/oDjcqlK//oBo+EuYuYlLC6ydM VX29SYZPrfA51LPtfsLtiaRIzDUeV0dOJW6cPSQUC9M6tfdyrSxEo8DcezKB3Dx5/Wy0LTbaH 9EvkQ7eBN2cZOBB2vRcvonblhrDW956in9fDKd1ez/AUHv9dvnnMKf8V2OGNs06gR3k1fsfiA tb3AcwRt3tkeKpK7boAStC8RQFgMpPVLMouYgtSBC2OdogjbBF9IJI4SN5ZP7gmdznEnpkylc j2Bq83Bu6lu+xTDhrKMqf/kstTxdp8dyADwDuqseGXg03D4x41SyqDB7YTxiTz/QZxLm5FXa9 o5lB4pq/kAZaA6piba0zXdQFGdmMZEm4TI2O8L1hY5XfCgTSHuDBczoRhnWyGW9/ozSwZ3seE TjxhVtkQdMQeQPSHX4/wX12qZuYOcbpxkQQYAaKY0EztrR4uURRpwAWhmy9iC48cL/6+ZLybl 4BneZz+9IqKYkCU7m1lH/Hx30VEzyfc+zM53EhtjxCW4itJxlw7r60tVwoGbUFBUzOeB5qB9b v16ZILDWASYAt1SGa X-Headers-End: 1jwLsy-0079K1-US Subject: Re: Reduce distortion? 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: 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 Rudolfo, you wrote: > I regularly use Sox to mix different audio channels, and I find it a > fantastic tool. So do I. > Now I did some piano home stereo live recording, and the playback > reveals here and there some distortion, probably because the > microphones were too close the piano strings. Tomorrow I'll try > to fix that error, but I like today's recordings and am sorry to > have to throw them away. Perhaps can Sox help in some way to > reduce the distortion? Or any other tool? I suppose also a > little could be all right... In principle it is hard to get rid of digital distortion. With SoX I would use some naive mixing trickery like selective low-pass-filtering the distorted parts or mixing the distorted signal with a lowpass-filtered and slightly compressed version. This could mask the critical parts somewhat. You could also try a research project from the Georgia Tech University called ClipAway from 2016. I didn't try it myself, but the approach looks interesting. They have a web-site available where you can upload your file and get it "declipped". https://cplaguna-audio.github.io/ClipAway/ Maybe you can report your success (or failure)? Best regards, Thomas _______________________________________________ Sox-users mailing list Sox-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sox-users