{"product_id":"doepfer-a-118-2v-noise-random-t-h-s-h-vintage-edition","title":"DOEPFER A-118-2 NOISE - RANDOM - T\u0026H - S\u0026H","description":"\u003ctable border=\"0\" cellpadding=\"4\" bgcolor=\"#FFFFFF\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003ctd align=\"left\" valign=\"top\"\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eModule A-118-2 is the slim version of module \u003ca href=\"http:\/\/www.doepfer.de\/a118.htm\"\u003eA-118-1\u003c\/a\u003e and offers essentially the same features as the \u003ca href=\"http:\/\/www.doepfer.de\/a118.htm\"\u003eA-118-1\u003c\/a\u003e. But the distances between the controls are smaller and rubberized small-sized knobs are used. In return the front panel has 4 HP only which is half the width of the \u003ca href=\"http:\/\/www.doepfer.de\/a118.htm\"\u003eA-118-1\u003c\/a\u003e. The module is primarily planned for applications where only limited space is available. The functional difference between A-118-1 and A-118-2 is the additional T\u0026amp;H\/S\u0026amp;H unit which is not included in the A-118-1.\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003eThe module generates the signals w\u003c\/span\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003ehite noise, \u003c\/span\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003ecolored noise, \u003c\/span\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003econtinuous random voltage and \u003c\/span\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003estepped random voltage (derived from the continuous random voltage by means of a S\u0026amp;H\/T\u0026amp;H unit).\u003cbr\u003eThe noise signal is generated 100% analog by amplification of the noise of a transistor. White and colored noise are usually used as audio sources. The random voltages are normally used as control voltages (e.g. for filter frequency or any other voltage controlled parameter).\u003cbr\u003eThe A-118-2 gives you the ability to mix the relative amounts of Red (low frequency component) and Blue noise (high frequency component) in the colored noise output.\u003cbr\u003eFor the continuous random voltage the rate of change (Rate) and amplitude (Level) of the random voltage can be adjusted. The continuous random voltage is derived from the colored noise signal by low pass filtering. Consequently the settings of the controls for the colored noise (Blue, Red) affect the behaviour of the random voltage ! A dual color LED (red = positive \/ yellow = negative output voltage) indicates the continuous random voltage.\u003cbr\u003eThe continuous random voltage is used as source for the S\u0026amp;H\/T\u0026amp;H unit. The type of operation can be set to S\u0026amp;H (sample and hold) or T\u0026amp;H (track and hold). When T\u0026amp;H is chosen the output signal follows the input signal (= continuous random voltage) as long as the Clock input is \"high\". As soon as the clock signal changes to \"low\" the last voltage is stored. When S\u0026amp;H is chosen the input signal (= continuous random voltage) is sampled at the rising edge of the Clock signal.\u003cbr\u003eFor the Clock signal a \"digital\" signal (e.g. Clock, Gate, rectangle output of an LFO) is required. It does not work with slowly changing continuous CV signals. Another dual color LED (red = positive \/ yellow = negative output voltage) indicates the stepped random voltage.\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cp align=\"left\"\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eControls:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eBlue\u003c\/strong\u003e: share of the high frequencies in the the colored noise output\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eRed\u003c\/strong\u003e: share of the low frequencies in the the colored noise output\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e: rate of change of the continuous random voltage\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eLevel\u003c\/strong\u003e: amplitude of the continuous random voltage\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eTH\/SH\u003c\/strong\u003e: switches between T\u0026amp;H und S\u0026amp;H\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eInputs and outputs:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eRND\u003c\/strong\u003e: continuous random voltage output (with LED display)\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eTH\/SH\u003c\/strong\u003e: stepped random voltage output (with LED display)\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eClk\u003c\/strong\u003e: Clock input of the S\u0026amp;H\/T\u0026amp;H unit\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eC Noise\u003c\/strong\u003e: colored noise output\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cstrong\u003eW Noise\u003c\/strong\u003e: white noise output\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: #ff0000; font-family: Arial;\"\u003eImportant notes:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003e\u003cspan style=\"color: #ff0000; font-family: Arial;\"\u003eAfter power on it takes a few minutes until the two noise signals and the random signals are generated. The module is not faulty when after power on the signals do not appear immediately !\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000; font-family: Arial; font-size: small;\"\u003eThe S\u0026amp;H\/T\u0026amp;H function is realized by pure analog circuitry (electronic switch followed by a holding capacitor and buffer). Consequently the output voltage drifts a bit in the holding state because the capacitor is discharged by parasitic resistors. The drift depends also upon environmental conditions like humidity or temperature. \u003c\/span\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003eSimilar modules:\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\n\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003ca href=\"http:\/\/www.doepfer.de\/a118.htm\"\u003eA-118-1\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003e Analog Noise\/Random module\u003c\/span\u003e\n\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003e\u003ca href=\"http:\/\/www.doepfer.de\/a117.htm\"\u003eA-117\u003c\/a\u003e Digital Noise module\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003e\u003ca href=\"http:\/\/www.doepfer.de\/A1491.htm\"\u003eA-149-1\u003c\/a\u003e Quantized\/Stored Random Voltages module\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd colspan=\"2\" align=\"left\" valign=\"top\"\u003e\u003chr size=\"1\"\u003e\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd colspan=\"2\" align=\"left\" valign=\"top\"\u003e\n\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003eBreite\/Width: 4TE \/ 4HP \/ 20.0 mm\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003eTiefe\/Depth: 40 mm (gemessen ab der Rückseite der Frontplatte \/ measured from the rear side of the front panel)\u003c\/span\u003e\u003cspan style=\"color: #000000; font-family: Arial; font-size: small;\"\u003e\u003cbr\u003eStrombedarf\/Current: \u003c\/span\u003e\u003cspan style=\"font-family: Arial; font-size: small;\"\u003e\u003cspan style=\"color: #000000;\"\u003e+20 \u003c\/span\u003emA (+12V) \/ -20mA (-12V)\u003c\/span\u003e\n\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e","brand":"DOEPFER","offers":[{"title":"Vintage Edition","offer_id":44577014972589,"sku":"doepfer-a-118-2v-noise-random-t-h-s-h-vintage-edition-1","price":127.0,"currency_code":"USD","in_stock":false},{"title":"Silver","offer_id":44577015005357,"sku":"doepfer-a-118-2-noise-random-t-h-s-h","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/3449\/7197\/products\/a-118-2v.jpg?v=1645060774","url":"https:\/\/www.detroitmodular.live\/products\/doepfer-a-118-2v-noise-random-t-h-s-h-vintage-edition","provider":"Detroit Modular","version":"1.0","type":"link"}