Audio Annotation Services

Audio Data Annotation for Speech Recognition and How We Help

Speech recognition AI, especially those focused on “audio classification,” can achieve effectiveness only due to high-quality training data comprised of stacks of audio recordings. Since individuals prepare these datasets, the success of your product hinges on the data annotation service you secure, particularly when you need to “annotate audio data.” As an outsourcing provider specializing in “data annotation,” we offer a cost-effective solution by equipping your company with leading sound annotation experts, ensuring your team is built and ready in just a few weeks.

image annotation services

Audio Annotation Services You Can Get

Here are the types of audio annotations your dedicated team can do:

Sound labeling

Sound labeling

The audio tagging professionals you outsource with us will accurately identify and label sounds on your audio. This annotation process includes creating snippets of spectrograms — wavelike visual representations of audio files. These spectrograms show signal amplitude so that annotators can distinguish voices, music, sounds made by animals and birds, noises, etc.

Speech annotation

Speech annotation

This task assumes data labelers match audio recordings with text files. They use verbal and sound timestamps to synchronize the voice-based streams with the text datasets. Speech labeling allows companies to teach their AI audio transcription models to identify various aspects of recorded speech: gender and age of the speaker and also the language, dialect, and accent.

Acoustic data classification

Acoustic data classification

Analysis of the environmental sounds on recordings, especially when trying to annotate audio recordings, is a complex endeavor. That's because extracting sounds of a metro, urban park, or shopping mall demands a depth of experience from annotators, especially when it comes to audio classification. Unlike music and speech, these environmental sounds lack consistent time patterns, making them challenging to pinpoint. Vehicles, raindrops, wind, birds, machinery, etc., serve as just a few examples of the diverse background noise that can be encountered.

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3D bounding boxes/cuboids

For CV Artificial Intelligence image annotation of volumetric objects with volume is the next critical task. Marking 3D boxes on images is more complicated not only because data labelers have to add more points and lines. The main challenge is to estimate where to add annotations and locate them, and advanced software is the primary assistant to our tag specialists.

Sound event tracking

Sound event tracking

With this technique used for audio recognition Machine Learning models can distinguish bird singing, dog barking, and human speech, coughing, and similar events. Audio annotators have to set the start and end of each pattern from recordings made in various spaces, from different distances, and from moving and static sources. This assignment requires skills, experience, and specific tools your dedicated team will have.

Speech-to-text transcription

Speech-to-text transcription

Your audio annotation specialists will be able to convert voice to text with superb speech recognition tools. They can pre-process audio files in multiple languages and compression. So you don't need to alter AAC to MP3 or unify audio recording in formats before the transcription. Also, audio practitioners will ensure files meet the required specifications for the best result.

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Music classification

In the annotation process, while extracting specific patterns from an audio file, Machine Learning algorithms are trained to classify music genres. Skilled sound labelers, adept at annotating audio, assist in categorizing music data into genres such as pop, rock, folk, jazz, hip-hop, and more. By annotating audio files in this manner, music platforms can construct playlists tailored to listeners' preferences, ensuring they are offered songs they adore.

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Environmental sound classification

In recent years, intelligent home software, audio monitoring systems, robotic devices, and other tools have become more popular. So for Machine Learning audio classification of domestic sounds is critical, and many businesses invest in environmental sound categorization projects. However, these recordings often contain noises and unrelated or different sounds together, so only top-notch labelers can process them.

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Line & polyline annotation

Training datasets with marked lines, polylines, and splines is the heart of autonomous driving. Helping machines see road markings and signs is quite a simple but responsible task. And we can find labelers with extensive expertise in annotating bus stops, crosswalks, pavements, bike lanes, double and dotted lines, and other traffic elements.

Multi-label annotation

Multi-label annotation

Some sound samples can possess more than one label, and these labels can appear several times in one recording. For example, one song can evoke different emotions, and professional labelers have to tag them throughout the entire audio file clip. The ML models will then choose the songs that best fit the mood listeners prefer.

Industries We Do Text Data Annotation For

Which industries can leverage professional text marking and structuring? Here are just a few cases:

finance

E-commerce and retail

Many online and brick-and-mortar shops optimize their content and descriptions for local voice searches. And this sales channel brings them more revenue every year.

IoT

IoT

The future belongs to home voice-smart gadgets like TVs, virtual assistants, microwaves, door locks, thermostats, lighting, trash bins, window blinds, fridges, air conditioning controllers, etc.

agriculture industry

Automotive

Speech recognition hands-free devices help drivers find the way, get information, or communicate without stopping. This allows drivers to follow the safety regulations and secure themselves and their passengers.

banking

Banking

The growing number of transactions makes banks search for new and more secure ways of client identification. So they start implementing voice authentication programs into their customer support tech stacks.

healthcare industry

Healthcare

Voice automatic speech recognition and tools let doctors dictate clinical statements, convert them into text, save them, and share them with colleagues. This way, they spend less time with each patient and note all critical details.

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Wearables

Voice-controlled wearables entered our lives years ago. And they don't seem to stop. This happens because voice technology evolves, letting us enjoy small-screen or screenless devices and incorporate them into our routines.

customer services

Customer service

With voice-powered software, customer service agents can handle more complicated queries. While voice assistants and conversational interfaces answer straightforward questions, business owners can close more requests with fewer specialists on board.

translation

Translation

With so many opportunities to travel and communicate, real-time voice translators have become invaluable. And modern speech recognition tools allow us to understand almost 100% of what the other person says.

5 Main Reasons to Choose Us

You probably have checked tens of audio annotation companies but still haven’t looked at the benefits of working with us:

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You'll spend less

Being a Kyiv-based company, we offer data and audio annotation tools and machine learning services from Ukrainian data labelers. This option will let you cut your team's salary and administrative costs and spend around 20% less. Payrolls of audio annotators from Ukraine are significantly lower than what their US and European colleagues earn — and that's due to the lower cost of living.

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You won't have to handle organizational tasks

Companies love the format we offer because they don't have to handle tasks not relevant to work. We take on everything from creating job descriptions to onboarding newcomers. And while we buy the equipment and arrange salary repayments, you keep focusing on business.

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You'll maximize productive work time

The issue with managing remote teams is different time zones. And some outsourcing destinations will leave you with only 2-3 shared working hours with your own audio annotation project team. But Ukrainian data labelers will be available during business hours for companies in the USA and Western Europe.

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You'll hire skilled experts

We hire audio data practitioners from Ukraine — one of the largest and most promising IT hubs. So our recruiters will contract specialists with years of the audio labeling experience in your industry. We also consider your corporate culture and try to get the best-matching people on your board.

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You'll build your team promptly

Our recruiting managers make lists of top annotation experts ready to start working ASAP. They create talent pools and regularly update them. So once a client needs those professionals, they can join your team shortly. This allows you to launch your project soon.

Get in Touch to Equip Your Project with Top Audio Annotation Service!

3 Ways to Hire Your Speech Annotation Practitioners

Check our cooperation models to optimize costs for your speech and language annotator or a dedicated team.

Hire a Managed Sound Annotation Team

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This option will suit companies with large ongoing ML projects that regularly need training datasets. We build a team of 2, 10, 15, or more audio labelers dedicated to your projects. You get complete control over these specialists and are free to schedule their tasks as you need.  

Contract a Part-Time Speech Labeling Specialist

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If your company only starts its journey in AI or needs to get the first audio dataset for Machine Learning models, select this cooperation format. You’ll pay for what you get, hiring a sound labeler for several hours a day. This approach is flexible and cost-effective, which is critical for startups.

Engage a Full-Time Audio Annotator

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Are you sure you’ll have enough work for one sound annotation practitioner, but it’s too early to hire several specialists? Then this model will be a perfect match! Pay a fixed monthly fee and prioritize tasks to your dedicated audio labeler. We’ll take care of all organizational issues while you concentrate on training datasets.

Accurate Audio Annotation Services Are Only One Step Away. Contact Us Today!