Tech Blog
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2026.09.09How to Choose a Speech Recognition API: 4 Comparison Points to Avoid Mistakes
Are you struggling to choose a speech recognition API because you're unsure what criteria to use? This article explains how to select one from a practical perspective, focusing on four aspects: functionality/performance, price, support, and security. You can also download a price and feature comparison table for seven major companies.
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2026.08.25Things to know before implementation: the accuracy of Japanese speech recognition
Is the "accuracy rate of X%" for speech recognition truly a reliable indicator? Even a single character error can lead to misrecognition that changes the meaning, potentially having a fatal impact on business operations. This article explains the unique difficulties of the Japanese language and how AmiVoice addresses them through proper noun registration and industry-specific engines.
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2026.07.30Thank you for all your submissions! Here's a summary of Zennfes Spring 2026.
We received numerous submissions for the Zenn Fes Spring 2026 article submission contest, under the theme of "Creating Voice Experiences with the AmiVoice API and Generative AI." We would like to share some of the insights we gained from these submissions.
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2026.07.22Only select specific words! Rule grammar and 3 useful parameters
Three new parameters have been added to the rule grammar engine of the AmiVoice API, which allows the system to recognize only expressions that follow grammar (rules) set by the user in advance. These improvements allow for further enhancement of recognition accuracy by excluding unsure recognition results, appropriately handling extraneous utterances, and quickly identifying the end of speech.
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2026.07.06What impact will speech recognition have on generative AI? New standards for quality evaluation.
How does the error rate in speech recognition affect the accuracy of generative AI? Based on research papers and AmiVoice's practical experiments, we introduce new standards for quality evaluation in the era of generative AI.
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2026.06.18Use the AmiVoice API safely! A practical guide to API key issuance and source IP address restriction
To operate the AmiVoice API more securely, setting expiration dates for API keys and restricting access by source IP addresses are effective. This document provides a detailed explanation of how to manage keys flexibly while preventing misuse.
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2026.06.01Let's try using the speech recognition API "AmiVoice API"
This article explains how to use AmiVoiceAPI, a speech recognition API for software development, to try out speech recognition. We have summarized the steps to actually use a sample program to display the recognition results for your own voice.
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2026.05.26How to adjust response time in real-time applications
"I want to shorten the waiting time for speech recognition"—that's where the recognition time control parameters of the AmiVoice API come in handy. This article explains how to balance the "accuracy" and "response speed" of speech recognition in application implementation, focusing on five time control parameters. We will also explain in detail from a developer's perspective the differences between real-time recognition and batch processing, the impact on noisy and low-volume audio, and practical tuning methods when integrating with generation AI.
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2026.05.11How to use coupons for Zenn Spring 2026
Hello! This time, we'll explain how to use the free usage coupon for the "AmiVoice API," a speech recognition API service currently available through a campaign being run by Advanced Media on Zenn.
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2026.04.24"Speech segment ratio" as seen in operational data
"How much does speech recognition actually cost?" -- To accurately understand the cost of the AmiVoice API, which charges only for the spoken portion, it's crucial to know the actual "speech segment ratio." This article analyzes the distribution of "speech segment ratios" based on real-world operational data. We'll provide concrete figures to give you an idea of the costs for each usage scenario, such as call centers, smartphone apps, and conference recordings. Please use this information to help you estimate costs before implementation.
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2026.03.27AmiVoice API update explanation: new parameters for voicebots reduce response wait times
Are you familiar with the new AmiVoice API parameters, "recognitionTimeout" and "noInputTimeout," developed based on customer feedback? By utilizing these parameters, you can terminate the processing of unnecessary voice data and control the waiting time during periods of silence, significantly improving the response quality of your voicebot. This article explains how each parameter works and provides specific usage examples.
Most Viewed Articles
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A quick explanation of how speech recognition works!
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Comparing the speech recognition rates of OpenAI's Whisper and AmiVoice for "conference" audio
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How to use the AmiVoice API free coupon
New Articles
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How to Choose a Speech Recognition API: 4 Comparison Points to Avoid Mistakes
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Things to know before implementation: the accuracy of Japanese speech recognition
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Thank you for all your submissions! Here's a summary of Zennfes Spring 2026.
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