AI-Driven Emotion Detection in Podcasts: Audio API for Communication Analysis

Human voice carries a unique power—it resonates deeply when delivered directly to our ears, conveying layers of meaning and emotion. Understanding these emotions through technology has become a reality with advancements in AI-powered audio emotion recognition. Our Audio Emotion API helps you to detect emotions from speech, offering actionable insights that go beyond simple communication. 

What is Audio Emotion AI and how does it work as an API?

Audio Emotion AI is a technology that interprets human speech to detect emotions by analyzing vocal characteristics like tone, pitch, and rhythm. As an API (Application Programming Interface), it enables users to integrate emotion recognition into their systems by processing audio inputs and providing detailed emotional data in return. 

With Imentiv’s AI-powered audio emotion analysis, you take control of understanding emotions in conversations and audio content. 

Our Audio API features make your analysis precise and actionable:

Analyze Emotions Through Audio and Text

Detect emotions directly from vocal tones, pitch, and rhythm, while also capturing the meaning behind the words in transcripts. 

Our audio API analyzes the emotional tone of the audio by providing intensity values for key emotions: anger, boredom, disgust, fear, happiness, neutral, sad, and surprise. It also quantifies the dominant emotion of each segment, allowing you to track emotional shifts with precision.

Additionally, our emotion api analyzes transcripts, labeling emotions across 28 categories such as confusion, caring, approval, annoyance, anger, amusement, admiration, surprise, sadness, remorse, relief, realization, pride, optimism, nervousness, love, joy, grief, gratitude, fear, excitement, embarrassment, disgust, disapproval, disappointment, desire, relaxation, and curiosity. 

This breakdown helps pinpoint the emotional tone of specific sentences, identifying key moments that shape the emotional narrative.

Track Speaker Emotions with Ease

• Identify emotions for each speaker (speaker diarization feature) in a multi-person conversation effortlessly.
• Rename speakers with labels like "Customer" or "Agent" to personalize your analysis.
• Dive into time-stamped segments to see emotional shifts for each portion of the dialogue.

Pinpoint Emotional Changes Over Time

Get a Quick Audio Summary

Our audio summary feature provides a concise transcript overview, offering a snapshot of key topics for faster decision-making. This allows you to quickly grasp the essence of the audio without reviewing the full transcript.

How Imentiv’s Audio Emotion API Works?

We’ve already covered the core features of our Audio Emotion API, such as emotion detection, emotional intensity analysis, and speaker diarization. 

Now, let's take a deeper look at how all these features are integrated into the Audio Emotion API to deliver accurate, actionable results.

In this section, we’ll walk you through how to integrate and use the Audio Emotion API in your projects, so you can start leveraging these powerful features right away.

To begin, sign in to your Imentiv account. Navigate to the Imentiv API page, where the Audio Emotion API resources are located.

_{The Imentiv Emotion API page displays a list of available APIs, including Audio, Video, Image, and Text.}

Step 2: Authorize Access

To authorize access, look for the “Authorize” button on the API page and click on it to enable access.  This step is crucial for validating your usage and ensuring secure interaction with the API.

_{The screenshot displays the authorization pop-up, prompting you to enter the API key to proceed with secure access to the Audio Emotion API}

_{This is the My Profile section in Imenitv Account, where you can copy your API token to use for authorization}

_{The screenshot shows the Imenitv API page with the authorization pop-up, where the API token is filled in the value placeholders, ready for submission}

Analyzing Audio Emotions: A Hands-On Study with Imentiv AI

To evaluate the efficiency of our Audio Emotion AI tool, I decided to compare it with other solutions. I used an online tool to obtain the transcript of the YouTube audio.

I selected the audio clip from the podcast Elon Musk: Neuralink and the Future of Humanity | Lex Fridman Podcast #438. I focused on the segment from 1:17:55 to 1:21:21, where Elon Musk and Lex Fridman discuss themes like time, utility, and success. To analyze the emotions in this conversation, I needed to understand not just the content but who said it, when they said it, and the tone and emotional engagement of each speaker. 

It wasn’t as simple as just reading the transcript.

However, this tool only provided a line-by-line transcript with timestamps, without identifying which speaker was speaking or analyzing the emotional tone of each line. 

I had to manually listen to the audio again to determine the speaker for each line, and then add speaker labels accordingly. Afterward, I input the edited transcript into an AI tool like ChatGPT for analysis, which generated a text summary highlighting the key points from the conversation (which was not sufficient, as it overlooked the deeper emotional dynamics of the conversation). These conversations had much more to offer, with complex emotional layers that a simple text analysis couldn’t fully capture.

While this manual process was useful, it required a significant amount of time and effort on my part.

In contrast, when I used Imentiv’s Audio Emotion AI tool, the process was much simpler and faster. All I had to do was upload the YouTube link, input the start and end times for the segment I wanted to analyze, and the tool instantly processed the data. 

Our Audio Emotion AI accurately identified two speakers and, after I renamed them 'Lex Fridman' and 'Elon Musk.' 

The results included the emotional intensity of each speech exchange and also an overall emotional analysis for the entire clip. For the entire audio clip, the dominant emotion was neutral, with a 63.19% value.

In this detailed analysis, our text emotion recognition identified emotions such as curiosity, admiration, and realization in Elon Musk's speech.

Our multimodal AI analyzes video, audio, and transcripts together—give it a try now!

Users can view the transcript and emotional data side by side in a user-friendly dashboard, gaining clearer insights into emotional tone and engagement. The Audio Emotion AI efficiently extracts key emotional insights, helping users understand speaker dynamics without manual labeling. Its speed and ease offer a significant improvement over traditional methods.

Our API integrates emotion recognition across video, audio, and text, enabling the analysis of customer service interactions, audience sentiment, and user experiences. It provides valuable insights into emotional responses, helping users tailor interactions for greater effectiveness. 

Analyze emotions in speech with Imentiv’s Audio Emotion AI. Get started today!