{"id":5325,"date":"2017-07-15T20:24:47","date_gmt":"2017-07-15T18:24:47","guid":{"rendered":"https:\/\/demo.pinanson.eu\/glossary\/cmrr\/"},"modified":"2025-09-12T15:40:12","modified_gmt":"2025-09-12T13:40:12","slug":"cmrr","status":"publish","type":"glossary","link":"https:\/\/pinanson.eu\/en\/glossary\/cmrr\/","title":{"rendered":"CMRR"},"content":{"rendered":"

Common Mode Rejection Ratio: This ratio gives an indication of the capacity of a device for rejecting common mode signals, ie signals which are applied simultaneously to the pair of conductors of a balanced cable (noise). When the common mode signal arrives along with the audio signal at the input of balanced audio, it eliminates the common mode signal (with same polarity) and amplifies the audio signal with reversed polarity. With unbalanced devices, the\u00a0CMRR<\/a>\u00a0can be very low (about 10\u00a0dB<\/a>) and balanced devices can be about 30 dB. If we need a significant increase of CMRR, we need an audio isolator which works through transformer. If the transformer is a quality transformer we can improve our noise rejection getting a CMRR of 120 dB.<\/p>\n<\/div><\/div><\/div>

Pinanson products related to the term CMRR<\/h3>\n<\/div><\/div><\/div>
\"Splitter<\/div>

Press splitter SA SMC<\/h2><\/a><\/div>
<\/div>
\n

Press splitters operate using input transformers that provide them with a high CMRR<\/p>\n<\/div>

<\/div>Read More<\/span><\/a>
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\"AISLADOR<\/div>

Audio Isolator<\/h2><\/a><\/div>
<\/div>
\n

Audio isolators<\/strong> work using input transformers that provide the connection with a high CMRR<\/strong><\/p>\n<\/div>

<\/div>Read More<\/span><\/a>
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<\/div><\/div><\/div><\/div>
\"splitter<\/div>

SAR Mic\/Line splitter<\/h2><\/a><\/div>
<\/div>
\n

SAR mic\/line splitter<\/strong> distributes signals through transformers that provide high CMRR<\/strong><\/p>\n<\/div>

<\/div>Read More<\/span><\/a>
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<\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Parameter that indicates the capacity of a device for rejecting common mode (noise).<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-5325","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"\nCMRR - Pinanson<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pinanson.eu\/en\/glossary\/cmrr\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CMRR - Pinanson\" \/>\n<meta property=\"og:description\" content=\"Parameter that indicates the capacity of a device for rejecting common mode (noise).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pinanson.eu\/en\/glossary\/cmrr\/\" \/>\n<meta property=\"og:site_name\" content=\"Pinanson\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-12T13:40:12+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/pinanson.eu\/en\/glossary\/cmrr\/\",\"url\":\"https:\/\/pinanson.eu\/en\/glossary\/cmrr\/\",\"name\":\"CMRR - 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