Librispeech

Dataset name	Type of data	Annotation remarks	License	Metadata
LibriSpeech	FLAC	The audio file and the transcription file are stored under the same directory. There are multiple audio files and only one txt file which is the transcription. And in the transcription file, the transcription for each audio is in separate lines.	Creative Commons Attribution 4.0 International License.	Sampling rate: 16 kHz Download size: 57.14 GiB

Performance Difference in WER between APIs

We use a part(1272/128104) of dataset dev-clean(development set, "clean" speech) to compare the performance between the Google and Whisper APIs.

WER Overview

	Google WER	Whisper WER
1272-128104-0000.flac	17.65	5.88
1272-128104-0001.flac	30.0	10.0
1272-128104-0002.flac	15.62	3.12
1272-128104-0003.flac	29.17	8.33
1272-128104-0004.flac	29.41	16.18
1272-128104-0005.flac	11.11	5.56
1272-128104-0006.flac	41.67	16.67
1272-128104-0007.flac	5.26	5.26
1272-128104-0008.flac	36.36	18.18
1272-128104-0009.flac	37.21	9.3
1272-128104-0010.flac	20.0	6.67
1272-128104-0011.flac	50.0	5.88
1272-128104-0012.flac	22.22	0.0
1272-128104-0013.flac	27.78	5.56
1272-128104-0014.flac	80.0	40.0

Detailed Transcriptions

	Reference	Google transcription	Whisper transcription
1272-128104-0000.flac	MISTER QUILTER IS THE APOSTLE OF THE MIDDLE CLASSES AND WE ARE GLAD TO WELCOME HIS GOSPEL	Mr quilter is the apostle of the middle classes and we're glad to welcome his gospel	Mr. Quilter is the apostle of the middle classes, and we are glad to welcome his gospel.
1272-128104-0001.flac	NOR IS MISTER QUILTER'S MANNER LESS INTERESTING THAN HIS MATTER	nor is Mr coaches Manor less interesting than his matter	Nor is Mr. Quilter's manner less interesting than his matter.
1272-128104-0002.flac	HE TELLS US THAT AT THIS FESTIVE SEASON OF THE YEAR WITH CHRISTMAS AND ROAST BEEF LOOMING BEFORE US SIMILES DRAWN FROM EATING AND ITS RESULTS OCCUR MOST READILY TO THE MIND	he tells us that at this festive season of the Year with Christmas roast beef looming before us similies drawn from eating and it's results are coronavirus ready to the mind	He tells us that at this festive season of the year, with Christmas and roast beef looming before us, similarly drawn from eating and its results occur most readily to the mind.
1272-128104-0003.flac	HE HAS GRAVE DOUBTS WHETHER SIR FREDERICK LEIGHTON'S WORK IS REALLY GREEK AFTER ALL AND CAN DISCOVER IN IT BUT LITTLE OF ROCKY ITHACA	is grave doubts whether sir Frederic Layton's work is really Greek after all and can discover in it but little of Rocky is a car	He has graved doubts whether Sir Frederick Layton's work is really Greek after all, and can discover in it but little of Rocky Ithaca.
1272-128104-0004.flac	LINNELL'S PICTURES ARE A SORT OF UP GUARDS AND AT EM PAINTINGS AND MASON'S EXQUISITE IDYLLS ARE AS NATIONAL AS A JINGO POEM MISTER BIRKET FOSTER'S LANDSCAPES SMILE AT ONE MUCH IN THE SAME WAY THAT MISTER CARKER USED TO FLASH HIS TEETH AND MISTER JOHN COLLIER GIVES HIS SITTER A CHEERFUL SLAP ON THE BACK BEFORE HE SAYS LIKE A SHAMPOOER IN A TURKISH BATH NEXT MAN	Lozells pictures of gods and Adam paintings and Masons exquisite Angels national as a jingle poem Mr broken Fosters landscapes smile at one match in the same way that Mr Kaka used to flash his teeth and Mr John Collier gives his sister a cheerful slap on the back before he said like a shampooer in a Turkish bath next Man	Lynelle's pictures are a sort of upgards and atom paintings, and Mason's exquisite ittles are as national as a jingo poem. Mr. Birkett Foster's landscapes smile at one much in the same way that Mr. Carker used to flash his teeth. And Mr. John Collier gives his sitter a cheerful slap on the back, before he says, like a shampooer and a Turkish bath. Next man!
1272-128104-0005.flac	IT IS OBVIOUSLY UNNECESSARY FOR US TO POINT OUT HOW LUMINOUS THESE CRITICISMS ARE HOW DELICATE IN EXPRESSION	is obviously unnecessary for us to point out how luminous these criticisms are how delicate an expression	It is obviously unnecessary for us to point out how luminous these criticisms are, how delicate and expression.
1272-128104-0006.flac	ON THE GENERAL PRINCIPLES OF ART MISTER QUILTER WRITES WITH EQUAL LUCIDITY	and the general principles of artistic water rates with equal lucidity	On the general principles of art, Mr. Krilter writes with equal lucidity.
1272-128104-0007.flac	PAINTING HE TELLS US IS OF A DIFFERENT QUALITY TO MATHEMATICS AND FINISH IN ART IS ADDING MORE FACT	painting he tells us is of a different quality to Mathematics and finish in art is adding more fat	Painting, he tells us, is of a different quality to mathematics, and finish in art is adding more factor.
1272-128104-0008.flac	AS FOR ETCHINGS THEY ARE OF TWO KINDS BRITISH AND FOREIGN	as for itching there are two kinds of British and foreign	As for etchings, there are two kinds, British and foreign.
1272-128104-0009.flac	HE LAMENTS MOST BITTERLY THE DIVORCE THAT HAS BEEN MADE BETWEEN DECORATIVE ART AND WHAT WE USUALLY CALL PICTURES MAKES THE CUSTOMARY APPEAL TO THE LAST JUDGMENT AND REMINDS US THAT IN THE GREAT DAYS OF ART MICHAEL ANGELO WAS THE FURNISHING UPHOLSTERER	elements most beautiful that has been made between decorative part and what we usually call pictures makes a customer appeal to The Last Judgement and reminds us that integrate days of art Michelangelo was the furnishing a poster	He laments most bitterly the divorce that has been made between decorative art and what we usually call pictures. Mixed a customary appeal to the last judgment and reminds us that in the great days of art Michelangelo was the furnishing upholsterer.
1272-128104-0010.flac	NEAR THE FIRE AND THE ORNAMENTS FRED BROUGHT HOME FROM INDIA ON THE MANTEL BOARD	near the fire any ornaments Fred brought home from India on the mental board	near the fire, and the ornaments Fred brought home from India on the mental board.
1272-128104-0011.flac	IN FACT HE IS QUITE SEVERE ON MISTER RUSKIN FOR NOT RECOGNISING THAT A PICTURE SHOULD DENOTE THE FRAILTY OF MAN AND REMARKS WITH PLEASING COURTESY AND FELICITOUS GRACE THAT MANY PHASES OF FEELING	in fact is quite severe Mr Ruskin from not recognising that I picked you shouldn't up the 3rd of man and remarks with please increase the infelicitous Grace that many faces is a feeling	In fact, he is quite severe on Mr. Ruskin for not recognizing that a picture should denote the frailty of man, and remarks with pleasing courtesy and felicitous grace that many phases of feeling
1272-128104-0012.flac	ONLY UNFORTUNATELY HIS OWN WORK NEVER DOES GET GOOD	only unfortunately is only work never does get good	Only, unfortunately, his own work never does get good.
1272-128104-0013.flac	MISTER QUILTER HAS MISSED HIS CHANCE FOR HE HAS FAILED EVEN TO MAKE HIMSELF THE TUPPER OF PAINTING	Mr Coulter has missed his chance for his failed even to make himself the tower of painting	Mr. Quilter has missed his chance, for he has failed even to make himself the Tupper of Painting.
1272-128104-0014.flac	BY HARRY QUILTER M A	hi Harry quarter ma	by Harry quilter MA.

Conclusion

The SR model from Whisper significantly outperforms Google's. It surpasses Google not just in WER but also produces more human-friendly transcriptions with appropriate punctuation.

To enhance the precision of the WER evaluation, we could better normalize both the references and hypotheses before evaluating WER. For instance, equating terms like 'mister' and 'mr' would aid in consistency.

Comparison Between Transcription and Original Transcript using whisper

• Transcription (Reader: Xueying Liu)
• Actual sentence and comparison
• Transcription (Reader: Jingxuan Yue)
• Actual sentence and comparison
• Transcription (Reader: M.Tepei)
• Actual sentence and comparison

Contributors

• Yuxing Ouyang
• Xiaoling Lin
• Xueying Liu
• Jingxuan Yue
• M.Tepei