{"id":24275,"date":"2023-09-11T09:49:25","date_gmt":"2023-09-11T07:49:25","guid":{"rendered":"https:\/\/demdlx704as001.ad.harman.com\/?p=24275"},"modified":"2024-05-29T08:15:20","modified_gmt":"2024-05-29T06:15:20","slug":"sound-card-configuration-3","status":"publish","type":"post","link":"https:\/\/audioworx.transfunnel.co\/old\/?p=24275","title":{"rendered":"Sound Card Configuration"},"content":{"rendered":"<p>The Sound Card Setting\u00a0 allows you to configure the host API (audio driver), device, sample rate, block length, and the master output for the audio processing. Based on device selection, input and output channels are available for configuration.<br \/>\nUsing &#8220;Master Output&#8221; you can set master and device output modes for speaker configuration in Measurement Module.<br \/>\nThe configured sound card configuration is used throughout the RTA and Measurement Acquisition features.<\/p>\n<p class=\"note\">Before you start Measurement wizard or set the \u201cSound In\u201d and \u201cSound Out\u201d devices in the RTA, make sure you have configured sound card settings like Host API (Driver Protocol), Device, Sample Rate and Block length of the sound card.<\/p>\n<p>On the &#8220;Streams&#8221; section list of available channels for input and outputs is displayed .<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-24276 \" src=\"https:\/\/audioworx.transfunnel.co\/old\/wp-content\/uploads\/2023\/09\/SoundcardConfig-e1694427548689.png\" alt=\"\" width=\"837\" height=\"490\" \/><\/p>\n<p>GTT supports two host API &#8220;MME&#8221; and &#8220;ASIO&#8221;.<\/p>\n<ul>\n<li><strong>MME:<\/strong> This is the standard windows audio driver. It allows operation of multiple audio devices at the same time. Sample rates are handled by the operating system. Can be set to any sample rate. If the sample rate of the physical audio device is different, then OS takes care of the sample rate conversion. This mode is recommended if multiple devices are running at the same time, e.g. measuring with an USB microphone while playing back generator signals with an internal sound card.<\/li>\n<\/ul>\n<p class=\"note\">\u00a0It is recommended to keep the block length at the maximum value of 4096 and the sample rate at 44.1 kHz or 48 kHz.<\/p>\n<ul>\n<li><strong>\u00a0ASIO:<\/strong> This driver is used with multi-channel sound cards. It enables low latencies and ensures that all input and output channels are in sync. Depending on the latency requirements of the audio signal processing provided by a loaded plugin (future feature) the block length can be reduced down to 64 samples. The RTA sample rate setting has to be equal to the audio device driver sample rate.<\/li>\n<\/ul>\n<p class=\"note\">It is recommended to use an ASIO sound card instead of Windows drivers. When using Windows drivers, it is advised to use a block length greater than 1024 in order to avoid the noise distortion effect, which is a known limitation of the Windows driver (as observed even in audio mulch).<\/p>\n<p class=\"note\">The setting for sample rate does not change the actual setting in the sound card driver. The alignment of the sample rate setting has to be ensured by the user.<\/p>\n<p class=\"text\"><strong>Supported sample rate<\/strong><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-24357\" src=\"https:\/\/audioworx.transfunnel.co\/old\/wp-content\/uploads\/2023\/09\/Sample_rate_01.png\" alt=\"\" width=\"174\" height=\"233\" \/><\/p>\n<p class=\"text\"><strong>Supported block length<\/strong><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-24358\" src=\"https:\/\/audioworx.transfunnel.co\/old\/wp-content\/uploads\/2023\/09\/Block_length_01.png\" alt=\"\" width=\"174\" height=\"202\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Sound Card Setting\u00a0 allows you to configure the host API (audio driver), device, sample rate, block length, and the master output for the audio processing. Based on device selection, input and output channels are available for configuration. Using &#8220;Master Output&#8221; you can set master and device output modes for speaker configuration in Measurement Module. 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