Many amateurs are beginners or hobbyists, while others have a high degree of experience in astronomy and often assist and work alongside professional astronomers.

Many actors train at length in special programs or colleges to develop these skills, and today the vast majority of professional actors have undergone extensive training.

Many anthems have been composed since this time, generally by organists rather than professional composers and often in a conservative style.

Many professional VTRs can " burn " ( overlay ) the tape timecode onto one of their composite outputs.

Many championship and bowl games at college and professional level are commemorated by the names of the opposing teams each being painted in one of the opposite end zones.

Many professional organizations similarly resemble the guild structure.

Many of them are in the professional category.

Many artists, amateur and professional, perform in situations where a full band / orchestra is either logistically or financially impractical, so they use a " karaoke " recording ; they are, however, the original artists.

Many radio and television weather forecasters are professional meteorologists, while others are merely reporters ( weather specialist, weatherman, etc.

Many scholars believe that the original poem was composed in an oral tradition by an aoidos ( epic poet / singer ), perhaps a rhapsode ( professional performer ), and was more likely intended to be heard than read.

Many professional programmers also work for consulting companies at client sites as contractors.

Many other professional fields have some level of peer review process: accounting, law,

Many television shows and films have been produced which portray in-character professional wrestlers as protagonists, such as Ready to Rumble, ¡ Mucha Lucha !, Nacho Libre, and the Santo film series.

Many players from OJC have played for professional football clubs, like FC Den Bosch, RKC Waalwijk, Willem II, etc.

Many anime conventions are a hybrid between non-profit and commercial events, with volunteer organizers handling large revenue streams and dealing with commercial suppliers and professional marketing campaigns.

Many professional science fiction authors started their interest in science fiction as fans, and some still publish their own fanzines or contribute to those published by others.

Many lived double lives, keeping their private lives secret from their professional ones.

Many newspapers have a weekly tanka column, and there are many professional and amateur tanka poets ; Makoto Ooka's poetry column was published seven days a week for more than 20 years on the front page of Asahi Shimbun.

Many are run entirely by volunteers and often do not meet the professional standards established by the museum industry.

Many US city and local governments hire professional and amateur hunters each year to reduce populations of animals such as deer that are becoming hazardous in a restricted area, such as neighbourhood parks and metropolitan open spaces.

Many prominent civic, professional, and commercial leaders from around the United States participated in the financing, coordination, and management of the Fair, including Chicago shoe tycoon Charles H. Schwab, Chicago railroad and manufacturing magnate John Whitfield Bunn, and Connecticut banking, insurance, and iron products magnate Milo Barnum Richardson, among many others.

Many types exist, small mouth blown whistles for various functions from toys to hunting using bird and fowl calls type whistles, to professional whistles as police, boatswain's pipe, military, sports whistles ( also called pea whistles ), to much larger steam or air preasure operated ones as train whistles, which are steam whistles specifically designed for use on locomotives and ships.

Many professional statisticians have a PhD.

Many professional embroidery operations still refer to those individuals who create the designs and machine patterns as " punchers ", even though punched cards and paper tape were eventually phased out, after many years of use, in the 1990s.

Many of the current top division wrestlers entered professional sumo by this route.

Many multimedia data streams contain both audio and video, and often some metadata that permit synchronization of audio and video.

Many audio insiders like Sean Olive of Harman International share this view.

Many low-end entertainment systems have a karaoke mode that attempts to remove the vocal track from regular audio CDs, using an Out Of Phase Stereo ( OOPS ) technique.

Many USB devices combine MIDI and audio data in the same link, and the two streams can interfere with each other and cause delayed or lost data.

Many copiers — utilities to copy programs from audio tape to another tape, microdrive tapes, and later on diskettes — were available for the Spectrum.

Many components of an audio reproduction chain, notably loudspeakers and multiway loudspeaker crossover networks, introduce group delay in the audio signal.

Many pitch generators operate in the digital domain, producing output in various digital audio formats such as AES-3, or SPDIF.

Many audio books have some form of musical accompaniment, but these are generally not extensive enough to be released as a separate soundtrack.

Many telephones connect to a twisted pair of wires, and internally separate the AC component of the voltage between the two wires ( the audio signal ) from the DC component of the voltage between the two wires ( used to power the phone ).

Many airliners offer movies or audio / video on demand ( this is standard in first and business class on many international flights and may be available on economy ).

Many musicians and artists use ' patcher ' type programmes, such as Pd, Bidule, Max / MSP and Audiomulch as well as ( or instead of ) digital audio workstations or sequencers and there are still a significant number of people using more " traditional " software only approaches such as CSound or the Composers Desktop Project.

Many black-and-white episodes of Guiding Light survive as kinescopes ; although the quality of these films has degraded to the point where in some cases the video is too dark to be worth viewing, the audio quality is fine.

Many video and audio files are also available from iTunes U.

Many Japanese voice actors frequently branch into music, often singing the opening or closing themes of shows in which their character stars, or become involved in non-animated side projects such as audio dramas ( involving the same characters in new storylines ) or image songs ( songs sung in character that are not included in the anime but further develop the character ).

Many different crossover types are used in audio, but they generally belong to one of the following classes.

Many aspects of DVB are patented, including elements of the MPEG video coding and audio coding.

Many people that were listening to TV or radio reported barely hearing the audio, not seeing the video, hearing overlapping audio, or on cable and satellite systems which redirect to one certain channel slot to launch the test, were stuck on the EAS channel without routing to the test ( such as a non-essential shopping channel, TV Guide Network, Music Choice audio channel, or in DirecTV's case, a Sonic Tap audio channel airing Lady Gaga's Paparazzi at the time ).

Many books, as well as audio, video, and computer materials, remain in print and are carried by major online and traditional retailers.

Many of these DVDs have come under controversy, however, for remixing audio and not including the original mono soundtracks.

Many of the existing audio, speech, image, and video compression techniques have transforms, quantization, and bit-rate allocation procedures that capitalize on the general shape of rate – distortion functions.