- 24 December 2006
- 261
Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
- Thread starter skaloumbakas
- Start date
Stergito
Μέλος Σωματείου
christos
Supreme Member
πολυ ενδιαφερον .
Αλλα παλι δεν ελυσα την απορια μου πια πλευρα του αυλακιου αντιστοιχει σε πιο καναλι?
Αλλα παλι δεν ελυσα την απορια μου πια πλευρα του αυλακιου αντιστοιχει σε πιο καναλι?
guru
Senior Member
- 13 January 2007
- 316
...και μετά βάζεις το δισκάκι να παίξει με αυτό :
http://www.youtube.com/watch?v=0uYsjs_xleg&mode=related&search=
...("ύποπτο" link)...:flipout:
http://www.youtube.com/watch?v=0uYsjs_xleg&mode=related&search=
...("ύποπτο" link)...:flipout:
- 24 December 2006
- 261
Re: Απάντηση: Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
Οπως βλέπεις την κεφαλή από μπροστά, το αριστερό του αυλακιού δίνει σήμα στο αριστερο κανάλι και το δεξί στο δεξί κανάλι.
christos
Supreme Member
:SFGSFGSF: ..και μετά βάζεις το δισκάκι να παίξει με αυτό :
http://www.youtube.com/watch?v=0uYsj...elated&search=:SFGSFGSF:
http://www.youtube.com/watch?v=0uYsj...elated&search=:SFGSFGSF:
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christos
Supreme Member
Απάντηση: Re: Απάντηση: Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
Ευχαριστω ημουν σιγουρος οτι το ηξερες ,πολυ καιρο με ετρωγε και δε εβρισκα ακρη:grinning-smiley-043
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guru
Senior Member
- 13 January 2007
- 316
Re: Απάντηση: Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
...άκυρο ("ύποπτο") link...:flipout:
...άκυρο ("ύποπτο") link...:flipout:
Internet King
Supreme Member
- 24 December 2006
- 261
Re: Απάντηση: Re: Απάντηση: Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
Γιατί μήπως εγώ θυμόμουνα?
Για να σου απαντήσω, πήρα ένα βουρτσάκι και ακούμπησα προσεκτικά από την μιά πλευρά την κεφαλή και ακουσα πιό ηχείο "ξήνει"...
Την άλλη φορά που θα το ξεχάσεις πάλι, θα το κάνεις μόνος σου... :ADFAD2:
Γιατί μήπως εγώ θυμόμουνα?
Για να σου απαντήσω, πήρα ένα βουρτσάκι και ακούμπησα προσεκτικά από την μιά πλευρά την κεφαλή και ακουσα πιό ηχείο "ξήνει"...
Την άλλη φορά που θα το ξεχάσεις πάλι, θα το κάνεις μόνος σου... :ADFAD2:
christos
Supreme Member
Εχω μια χαζή απορία: Οταν το αυλάκι τείνει να μετακινεί την βελόνα προς τα δεξιά τότε παιζει το δεξί κανάλι. Οταν τείνει προς τα αριστερα, το αριστερό κανάλι.
Οταν πρέπει να παίξουν και τα δυο τι γίνεται?!?! Γίνεται 2 κομμάτια η βελόνα?!
Οταν πρέπει να παίξουν και τα δυο τι γίνεται?!?! Γίνεται 2 κομμάτια η βελόνα?!
christos
Supreme Member
οταν παιζει δεν πρεπει να τεινει πουθενα,αν τεινει θελει διορθωση να μην τεινει (οπως το antiskating) ,.παντα παιζουν και τα δυο καναλια ειτε εχουν πληροφορια ειτε οχι.
Στην προκειμενη περιπτωση ο σκαλουμπακας για να μου απαντησει πιο καναλι ειναι πιο εσπρωξε προς τα μια πλευρα την κεφαλη για να σιγουρευτει .
Στην προκειμενη περιπτωση ο σκαλουμπακας για να μου απαντησει πιο καναλι ειναι πιο εσπρωξε προς τα μια πλευρα την κεφαλη για να σιγουρευτει .
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- 24 December 2006
- 261
Εχω την εντύπωση ότι ο sfortis ρωτάει πως δημιουργούνται 2 σήματα - κανάλια, τη στιγμή που η βελόνα είναι μία... :BXVZCBXZ6:Εχω μια χαζή απορία: Οταν το αυλάκι τείνει να μετακινεί την βελόνα προς τα δεξιά τότε παιζει το δεξί κανάλι. Οταν τείνει προς τα αριστερα, το αριστερό κανάλι.
Οταν πρέπει να παίξουν και τα δυο τι γίνεται?!?! Γίνεται 2 κομμάτια η βελόνα?!
Δεν είναι καθόλου χαζή η ερώτηση.
Τσάκωνας Βασίλης
Supreme Member
Το πρόβλημα δεν είναι πως φτιάχνονται οι δίσκοι, αλλά πως θα τους αναγκάσουμε να φτάσουν από το δισκάδικο στην δισκοθήκη μας.
Πάντως, ωραία τα videάκια!
Πάντως, ωραία τα videάκια!
christos
Supreme Member
Απάντηση: Re: Πώς τυπώνεται ένας δίσκος (φιλμ 1 & 2)
In 1958 the first stereo two-channel records were issued – by Audio Fidelity in the USA and Pye in Britain, using the Westrex "45/45" single-groove
system. While the stylus moves horizontally when reproducing a monophonic disk recording, on stereo records the stylus moves vertically as well as horizontally.
One could envision a system in which the left channel was recorded laterally, as on a monophonic recording, with the right channel information recorded with a "hill-and-dale" vertical motion; such systems were proposed but not adopted, due to their incompatibility with existing phono pickup designs (see below). In the Westrex system, each channel drives the cutting head at a 45 degree angle to the vertical. During playback the combined signal is sensed by a left channel coil mounted diagonally opposite the inner side of the groove, and a right channel coil mounted diagonally opposite the outer side of the groove.[1]
It is helpful to think of the combined stylus motion in terms of the vector sum and difference of the two stereo channels. Effectively, all horizontal stylus motion conveys the L+R sum signal, and vertical stylus motion carries the L-R difference signal. The advantages of the 45/45 system are:
greater compatibility with monophonic recording and playback systems. A monophonic cartridge will reproduce an equal blend of the left and right channels instead of reproducing only one channel. Conversely, a stereo cartridge reproduces the lateral grooves of monophonic recording equally through both channels, rather than one channel.
a more balanced sound, because the two channels have equal fidelity (rather than providing one higher-fidelity laterally recorded channel and one lower-fidelity vertically recorded channel);
higher fidelity in general, because the "difference" signal is usually of low power and thus less affected by the intrinsic distortion of hill-and-dale recording.
This system was invented by Alan Blumlein of EMI in 1931 and patented the same year. EMI cut the first stereo test discs using the system in 1933. It was not used commercially until a quarter of a century later.
Stereo sound provides a more natural listening experience where the spatial location of the source of a sound is, at least in part, reproduced.
The development of quadraphonic records was announced in 1971. These recorded four separate sound signals. This was achieved on the two stereo channels by electronic matrixing, where the additional channels were combined into the main signal. When the records were played, phase-detection circuits in the amplifiers were able to decode the signals into four separate channels. There were two main systems of matrixed quadrophonic records produced, confusingly named SQ (by CBS) and QS (by Sansui). They proved commercially unsuccessful, but were an important precursor to later 'surround sound' systems, as seen in SACD and home cinema today. A different format, CD-4 (not to be confused with compact disc), by RCA, encoded rear channel information on an ultrasonic carrier, which required a special wideband cartridge to capture it on carefully-calibrated pickup arm/turntable combinations. Typically the high frequency information inscribed onto these LPs wore off after only a few playings, and CD-4 was even less successful than the two matrixed formats.
http://en.wikipedia.org/wiki/Stereophonic_sound#Stereo_in_vinyl_records
AYTO ειναι πιο σαφες>>>
http://www.vinylrecorder.com/stereo.html
Εχω μια χαζή απορία: Οταν το αυλάκι τείνει να μετακινεί την βελόνα προς τα δεξιά τότε παιζει το δεξί κανάλι. Οταν τείνει προς τα αριστερα, το αριστερό κανάλι.
Οταν πρέπει να παίξουν και τα δυο τι γίνεται?!?! Γίνεται 2 κομμάτια η βελόνα?!
In 1958 the first stereo two-channel records were issued – by Audio Fidelity in the USA and Pye in Britain, using the Westrex "45/45" single-groove
system. While the stylus moves horizontally when reproducing a monophonic disk recording, on stereo records the stylus moves vertically as well as horizontally.
One could envision a system in which the left channel was recorded laterally, as on a monophonic recording, with the right channel information recorded with a "hill-and-dale" vertical motion; such systems were proposed but not adopted, due to their incompatibility with existing phono pickup designs (see below). In the Westrex system, each channel drives the cutting head at a 45 degree angle to the vertical. During playback the combined signal is sensed by a left channel coil mounted diagonally opposite the inner side of the groove, and a right channel coil mounted diagonally opposite the outer side of the groove.[1]
It is helpful to think of the combined stylus motion in terms of the vector sum and difference of the two stereo channels. Effectively, all horizontal stylus motion conveys the L+R sum signal, and vertical stylus motion carries the L-R difference signal. The advantages of the 45/45 system are:
greater compatibility with monophonic recording and playback systems. A monophonic cartridge will reproduce an equal blend of the left and right channels instead of reproducing only one channel. Conversely, a stereo cartridge reproduces the lateral grooves of monophonic recording equally through both channels, rather than one channel.
a more balanced sound, because the two channels have equal fidelity (rather than providing one higher-fidelity laterally recorded channel and one lower-fidelity vertically recorded channel);
higher fidelity in general, because the "difference" signal is usually of low power and thus less affected by the intrinsic distortion of hill-and-dale recording.
This system was invented by Alan Blumlein of EMI in 1931 and patented the same year. EMI cut the first stereo test discs using the system in 1933. It was not used commercially until a quarter of a century later.
Stereo sound provides a more natural listening experience where the spatial location of the source of a sound is, at least in part, reproduced.
The development of quadraphonic records was announced in 1971. These recorded four separate sound signals. This was achieved on the two stereo channels by electronic matrixing, where the additional channels were combined into the main signal. When the records were played, phase-detection circuits in the amplifiers were able to decode the signals into four separate channels. There were two main systems of matrixed quadrophonic records produced, confusingly named SQ (by CBS) and QS (by Sansui). They proved commercially unsuccessful, but were an important precursor to later 'surround sound' systems, as seen in SACD and home cinema today. A different format, CD-4 (not to be confused with compact disc), by RCA, encoded rear channel information on an ultrasonic carrier, which required a special wideband cartridge to capture it on carefully-calibrated pickup arm/turntable combinations. Typically the high frequency information inscribed onto these LPs wore off after only a few playings, and CD-4 was even less successful than the two matrixed formats.
http://en.wikipedia.org/wiki/Stereophonic_sound#Stereo_in_vinyl_records
AYTO ειναι πιο σαφες>>>
http://www.vinylrecorder.com/stereo.html
Last edited:
- 24 December 2006
- 261
christos
Supreme Member
christos
Supreme Member
δεν τα καταφερα να κατεβασω τα εικονιδια αν τα καταφερει καποιος αλλος
καλο θα ηταν να υπαρχουν
