{"language": "en", "segments": [{"text": " [...]", "start": 0.0, "stop": 31.5, "id": 0}, {"text": " hey mute what's the big idea of busting up my act why mute i am a new man haven't", "start": 97.08, "stop": 115.98, "id": 1}, {"text": " you heard about the wonderful thing dr. weston did for me he kept up my post gave", "start": 115.98, "stop": 121.46, "id": 2}, {"text": " me a set of vocal cords you ought to see him take it from me you'll never land a", "start": 121.46, "stop": 125.74, "id": 3}, {"text": " job the way you are let's go here we are", "start": 125.74, "stop": 143.34, "id": 4}, {"text": " hello talkie what's on your mind now my old", "start": 155.24, "stop": 158.48, "id": 5}, {"text": " friend you want you to put him through the", "start": 158.48, "stop": 160.22, "id": 6}, {"text": " works why man you still run on 60 we'll have to pep you up to 90 open your mouth", "start": 173.68, "stop": 181.56, "id": 7}, {"text": " yeah come right along with me now talkie let's put on an act permit", "start": 181.56, "stop": 197.64, "id": 8}, {"text": " him follow us through", "start": 197.64, "stop": 199.42, "id": 9}, {"text": " [...] why oh oh oh oh oh oh oh oh oh oh oh oh oh go the heart be will be [...] of", "start": 213.86, "stop": 239.26, "id": 10}, {"text": " claim inside this booth is a motion picture camera which is taking pictures", "start": 239.26, "stop": 243.4, "id": 11}, {"text": " through this window we use a soundproof booth when it's closed it keeps the", "start": 243.4, "stop": 248.88, "id": 12}, {"text": " camera noise away from the microphone the camera is operated by a motor which", "start": 248.88, "stop": 252.92, "id": 13}, {"text": " runs at exactly the same speed as the motor in the sound machine woooo it's hot", "start": 252.92, "stop": 258.66, "id": 14}, {"text": " in this booth let's get out on the set again and I'll show how the sound is", "start": 258.66, "stop": 262.88, "id": 15}, {"text": " picked up by the microphones on the stage sound waves are picked up by this", "start": 262.88, "stop": 267.88, "id": 16}, {"text": " wonderful mechanical ear the microphone which is really a glorified telephone", "start": 267.88, "stop": 272.78, "id": 17}, {"text": " transmitter this microphone changes the sound waves into electrical vibrations", "start": 272.78, "stop": 278.2, "id": 18}, {"text": " which are amplified here and sent along these wires to the mixer room the sounds", "start": 278.2, "stop": 283.58, "id": 19}, {"text": " from the stage microphones are mixed here so that the central for the action in", "start": 283.58, "stop": 288.14, "id": 20}, {"text": " the production mr. mixer sees the actors through this window and hears them only", "start": 288.14, "stop": 293.64, "id": 21}, {"text": " through this horn now that we've got the sound right I'll show you how it's", "start": 293.64, "stop": 308.86, "id": 22}, {"text": " amplified get ready", "start": 308.86, "stop": 310.66, "id": 23}, {"text": " the power from the microphones is amplified about 10 million times by these", "start": 316.02, "stop": 321.38, "id": 24}, {"text": " vacuum tubes making the voice current strong enough to operate the machine that", "start": 321.38, "stop": 326.94, "id": 25}, {"text": " photographs the sound do you follow me", "start": 326.94, "stop": 331.7, "id": 26}, {"text": " this is the machine that is used to record the sound on film", "start": 338.92, "stop": 343.58, "id": 27}, {"text": " this sound film is traveling at the same rate of speed as", "start": 343.58, "stop": 350.58, "id": 28}, {"text": " the picture film in the camera booth the light valve has two thin metal strings", "start": 350.58, "stop": 355.7, "id": 29}, {"text": " stretched across this tiny slit on one side of the slit is a strong light while", "start": 355.7, "stop": 361.34, "id": 30}, {"text": " on the other is a film moving at exactly the same speed as the picture camera in", "start": 361.34, "stop": 366.86, "id": 31}, {"text": " the studio the greatly amplified voice current passing through these tiny light", "start": 366.86, "stop": 372.16, "id": 32}, {"text": " valve strings move them closer together or further apart thus changing the size", "start": 372.16, "stop": 377.92, "id": 33}, {"text": " of the slit therefore the light varies as it passes through this rapidly changing", "start": 377.92, "stop": 382.98, "id": 34}, {"text": " opening leaving a true photographic record of the voice currents on the film", "start": 382.98, "stop": 387.46, "id": 35}, {"text": " simple illness now let's look at the films after they've been developed", "start": 389.76, "stop": 396.46, "id": 36}, {"text": " well here we are here are our two negatives developed the next", "start": 396.46, "stop": 403.46, "id": 37}, {"text": " step is to print these two negatives onto a third piece of film we'll print the", "start": 403.46, "stop": 410.26, "id": 38}, {"text": " sound record first and then the picture record here we", "start": 410.26, "stop": 417.1, "id": 39}, {"text": " have a completed sound print and we are now ready for projection", "start": 417.1, "stop": 422.34, "id": 40}, {"text": " this is the picture and sound projector", "start": 422.34, "stop": 429.22, "id": 41}, {"text": " one motor drives both the picture and sound equipment you", "start": 429.22, "stop": 436.04, "id": 42}, {"text": " see let me illustrate this with a simple diagram this lamp illuminates the", "start": 436.04, "stop": 441.84, "id": 43}, {"text": " soundtrack on the film the light from the lamp passes through the slit throwing a", "start": 441.84, "stop": 447.48, "id": 44}, {"text": " very narrow line of brilliant light on the soundtrack as the film runs past this", "start": 447.48, "stop": 453.96, "id": 45}, {"text": " light the marks on the soundtrack cause the light to increase and decrease this", "start": 453.96, "stop": 460.78, "id": 46}, {"text": " light in turn causes the current through the photoelectric cell to increase and", "start": 460.78, "stop": 465.68, "id": 47}, {"text": " decrease thus reproducing the electric vibrations first created by the sound wave", "start": 465.68, "stop": 471.1, "id": 48}, {"text": " the current from the photoelectric cell is peped up by the amplifier and then", "start": 471.1, "stop": 476.44, "id": 49}, {"text": " this amplified current is carried by wires along through the theater", "start": 476.44, "stop": 482.82, "id": 50}, {"text": " and down to the screen on the stage to connect with the loudspeakers", "start": 482.82, "stop": 488.62, "id": 51}, {"text": " this is a typical layout of the stage set with two horns behind the screen the", "start": 491.52, "stop": 497.58, "id": 52}, {"text": " receivers connected to the horns convert the electrical vibrations back into", "start": 497.58, "stop": 502.28, "id": 53}, {"text": " sound waves exactly the way the telephone receiver operates so that while the", "start": 502.28, "stop": 507.12, "id": 54}, {"text": " picture is being shown the sound which was recorded is reproduced", "start": 507.12, "stop": 511.16, "id": 55}, {"text": " in step with the picture", "start": 511.16, "stop": 512.76, "id": 56}, {"text": " the screen is full of small holes so that the horns may be placed behind the", "start": 517.22, "stop": 521.38, "id": 57}, {"text": " screen to let the sound through this gives the illusion that the sound is coming", "start": 521.38, "stop": 526.18, "id": 58}, {"text": " from the image of the speaker", "start": 526.18, "stop": 527.82, "id": 59}, {"text": " talking there goes your cue your next on screen while music and go try on his new", "start": 530.84, "stop": 535.74, "id": 60}, {"text": " voice okay [...] fall that wide", "start": 535.74, "stop": 542.02, "id": 61}, {"text": " look when whoopee I found my voice ha ha ha let me", "start": 542.02, "stop": 548.96, "id": 62}, {"text": " into that machine no you can't go out now Tucky's doing his stuff I can't a", "start": 548.96, "stop": 554.6, "id": 63}, {"text": " professor you'll get one to me", "start": 554.6, "stop": 557.86, "id": 64}, {"text": " look here smarty if you must stay on the screen with me suppose we get together", "start": 578.4, "stop": 583.02, "id": 65}, {"text": " with a little close harmony what do you say my lady we're going to leave you now", "start": 583.02, "stop": 617.84, "id": 66}, {"text": " my lady my lady", "start": 617.84, "stop": 627.4, "id": 67}]}