Instruct: Given a question, retrieve passages that answer the question.
Query: What was the earliest audio recording device?
The first practical sound recording and reproduction device was the mechanical phonograph cylinder, invented by Thomas Edison in 1877 and patented in 1878.[9][10] The invention soon spread across the globe and over the next two decades the commercial recording, distribution, and sale of sound recordings became a growing new international industry, with the most popular titles selling millions of units by the early 1900s. The development of mass-production techniques enabled cylinder recordings to become a major new consumer item in industrial countries and the cylinder was the main consumer format from the late 1880s until around 1910.
The AHRA's statutory definitions of "digital audio recording device" and "digital audio recording media" are crucial to understanding the implications of the Act. The distinction between covered and non-covered devices or media dictates whether royalties must be paid and whether the SCMS copy control technologies must be included. Notwithstanding more permissive interpretations, the distinction also determines whether noncommercial copying by consumers of digital and analog musical recordings is copyright infringement—to not be considered infringement, the language of the act requires that the copies be made using covered devices and media, regardless of whether the copy control technology is present or the royalty has been paid.
The cardiac digital delay unit led to Lee's work in digital audio delay. At the time, sound delay technology (used to create deliberate echo-effects) relied on tape loops and recording devices. MIT lecturer Barry Blesser suggested making a version of Lee's digital delay apparatus that could pass audio signals. With Bagnaschi, they created the first digital signal processor. Steve Temmer, the president of New York City’s Gotham Audio, heard about the experiment and commissioned 50 units of what would be sold as the Gotham Delta-T 101 in 1971, introducing digital delay to the live sound industry. The Delta-T 101 was soon repurposed in recording studios as a device for creating echo effect.
The impasse was broken at a meeting in Athens in 1989, when representatives from the recording industry and the consumer electronics industry reached a compromise intended to enable the sale of DAT recorders in the United States. Device manufacturers agreed to include SCMS in all consumer DAT recorders in order to prevent serial copying. The recording industry would independently pursue legislation requiring royalties on digital audio recording devices and media.
Another example of the use of these concepts is digital audio technology. A tape recorder, digital audio editor, or other device that is online is one whose clock is under the control of the clock of a synchronization master device. When the sync master commences playback, the online device automatically synchronizes itself to the master and commences playing from the same point in the recording. A device that is offline uses no external clock reference and relies upon its own internal clock. When a large number of devices are connected to a sync master it is often convenient, if one wants to hear just the output of one single device, to take it offline because, if the device is played back online, all synchronized devices have to locate the playback point and wait for each other device to be in synchronization. (For related discussion, see MIDI timecode, word sync, and recording system synchronization.)
In each case, the principal distinction between what is and is not covered by the AHRA is determined by whether or not the device is marketed or designed (or in the case of media, commonly used by consumers) to make audio recordings, not the device's capabilities. A CD-R recorder included as part of a personal computer would not be a digital audio recording device under the Act, since the personal computer was not marketed primarily for making copies of music. The same recorder, sold as a peripheral and marketed for the express purpose of making digital audio recordings, would fall under the Act's definition of a recording device.
For the magnetic tape sound recording Kornél Tolnai used magnetic tape as a medium for magnetic recording, made of a thin magnetizable coating on a long, narrow strip of plastic. Most audio, video and computer data storage is this type. It was developed in Germany, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and later on video tape recorders. A device that stores computer data on magnetic tape is a tape drive (tape unit, streamer).
Starting from Windows Vista and 7 new sound API model was introduced. There is no "stereo mix" or "mono mix". Instead every playback device can be opened in "loopback recording mode", so you can record what you hear from your speakers, headphones, digital output etc. Even if your audio card does not support it, Windows will emulate this functionality. HD Audio Recorder is tool that records “what you hear” in Windows Vista or Windows 7 using new API.
An audio tape recorder, tape deck, or tape machine is a sound recording and reproduction device that records and plays back sounds usually using magnetic tape for storage. In its present-day form, it records a fluctuating signal by moving the tape across a tape head that polarizes the magnetic domains in the tape in proportion to the audio signal. Tape-recording devices include the reel-to-reel tape deck and the cassette deck, which uses a cassette for storage.
The Taser CAM HD is a specialized device designed to capture audio and video without the need to manually turn on the
recording device, an action that is unpractical in the field. "Automatically capturing video and audio unburdens the user from the need to manually turn on the device during a dangerous situation. This is critical and guarantees there will always be a record of the TASER firing." Designed to be interchangeable between the Taser X26 or Taser X2, the camera records both video and audio automatically each time the Taser is armed (when the safety is moved into the up or active position). There is no interference to the normal function of the Taser; it is still fully functional while the camera is in operation. This innovation coupled with the data port download kit allows for the automatic archiving of critical events for law enforcement agencies.
In professional audio, a digital mixing console (DMC) is an electronic device used to combine, route, and change the dynamics, equalization and other properties of multiple audio input signals, using digital computers rather than analog circuitry. The digital audio samples, which is the internal representation of the analog inputs, are summed to what is known as a master channel to produce a combined output. A professional digital mixing console is a dedicated desk or control surface produced exclusively for the task, and is typically more robust in terms of user control, processing power and quality of audio effects. However, a computer with proper controller hardware can act as the device for the digital mixing console since it can mimic its interface, input and output. 
Digital mixing consoles are typically used in recording studios, public address systems, sound reinforcement systems, broadcasting, television, and film post-production.
The definition of "digital audio recording medium" is similar:
A "digital audio recording medium" is any material object in a form commonly distributed for use by individuals, that is primarily marketed or most commonly used by consumers for the purpose of making digital audio copied recordings by use of a digital audio recording device.
The AHRA's definition of "digital audio recording device" includes explicit exceptions for devices that are used primarily to record non-musical sounds (such as dictation devices and answering machines) and for "professional equipment". The definition of professional equipment was to have been set by the Department of Commerce, though these regulations have never been issued. "Professional" minidisc recorders without SCMS cost thousands of dollars.
No action may be brought under this title alleging infringement of copyright based on the manufacture, importation, or distribution of a digital audio recording device, a digital audio recording medium, an analog recording device, or an analog recording medium, or based on the noncommercial use by a consumer of such a device or medium for making digital musical recordings or analog musical recordings.
The Audio Home Recording Act of 1992 (AHRA) amended the United States copyright law by adding Chapter 10, "Digital Audio Recording Devices and Media". The act enabled the release of recordable digital formats such as Sony and Philips' Digital Audio Tape without fear of contributory infringement lawsuits.
By using the terms "digital audio recording device" and "digital audio recording medium", which have specific meanings in this legislation, Congress required that in order to be exempt from copyright infringement actions, digital copies must be made to a device or medium marketed specifically for recording audio. Though there are no reliable figures on the subject, the meager returns to the Copyright Office's DART fund amidst widespread copying and dissemination of digital music suggests that a great deal of copying, noncommercial or otherwise, is accomplished using devices not covered by the AHRA, such as portable MP3 players, computer hard drives, and most CD burners and CD-Rs.
For digital audio recording devices, manufacturers and importers pay a 2% royalty on the device's transfer price, with a minimum royalty of $1 and a maximum of $8 ($12 for dual recorders) per device. For digital audio recording media, manufacturers and importers pay a 3% royalty.
Audio input devices are used to capture sound. In some cases, an audio output device can be used as an input device, in order to capture produced sound. Audio input devices allow a user to send audio signals to a computer for processing, recording, or carrying out commands. Devices such as microphones allow users to speak to the computer in order to record a voice message or navigate software.Aside from recording, audio input devices are also used with speech recognition software.
Devices that can be used to connect to an electronic stethoscope and record the audio signal (e.g. heart or lung sounds) include PC, laptop and mobile devices like smartphones or tablets. Generally, CAA systems include software that can visualize the incoming audio signal. More sophisticated CAA systems include live noise detection algorithms, designed to help the user achieve the best possible recording quality.
A key feature of CAA systems is the automated analysis of the recorded audio signals by signal processing algorithms. Such algorithms can run directly on the device used for making the recording, or be hosted in a cloud connected to the device. The degree of autonomy of currently available analysis algorithms varies greatly. While some systems operate fully autonomously, early PC-based systems required significant user interaction and interpretation of results, and other analysis systems require some degree of assistance by the user like manual confirmation/correction of estimated heart rates.
The statutory definition states:
A "digital audio recording device" is any machine or device of a type commonly distributed to individuals for use by individuals, whether or not included with or as part of some other machine or device, the digital recording function of which is designed or marketed for the primary purpose of, and that is capable of, making a digital audio copied recording for private use.
John Meyer grew up in Berkeley, California. His earliest involvement with audio was in the late 1950s at the radio station KPFA. He received a radiotelephone third class license at 12 years old, and a second class license when he was 15. He attended Oakland High which was one of the first schools in the country to have an audio department. In the audio department he would build consoles and other audio devices
The RIAA brought suit against Diamond Multimedia Systems, Inc, (Diamond), "alleging that the Rio [a device manufactured by Diamond] does not meet the requirements for digital audio recording devices under the Audio Home Recording Act of 1992, 17 U.S.C. § 1001 et seq. (the "Act"), because it does not employ a Serial Copyright Management System ("SCMS") that sends, receives, and acts upon information about the generation and copyright status of the files that it plays." The Rio was defined as a portable digital audio device which "allows a user to download MP3 audio files from a computer and to listen to them elsewhere." The lower court denied the RIAA's request for injunctive relief, holding that the RIAA had failed to demonstrate a likelihood of success on the merits, and the RIAA appealed. On appeal, the ninth circuit upheld the lower court's decision to deny injunctive relief but found that the lower court had erred in holding that the Rio was a covered device under the AHRA. The court noted that in order to be a digital audio recording device, the Rio must be able to reproduce, either "directly" or "from a transmission," a "digital music recording."
The earliest radio stations were radiotelegraphy systems and did not carry audio. For audio broadcasts to be possible, electronic detection and amplification devices had to be incorporated.
Today, DART royalties consist of payments made to the US Copyright Office for "blank CDs and personal audio devices, media centers, satellite radio devices, and car audio systems that have recording capabilities", as stated by AARC, who distributes a majority of AHRA funds.
Magnetic storage in the form of wire recording—audio recording on a wire—was publicized by Oberlin Smith in the Sept 8, 1888 issue of "Electrical World". Smith had previously filed a patent in September, 1878 but found no opportunity to pursue the idea as his business was machine tools. The first publicly demonstrated (Paris Exposition of 1900) magnetic recorder was invented by Valdemar Poulsen in 1898. Poulsen's device recorded a signal on a wire wrapped around a drum. In 1928, Fritz Pfleumer developed the first magnetic tape recorder. Early magnetic storage devices were designed to record analog audio signals. Computers and now most audio and video magnetic storage devices record digital data.