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arxiv: 2606.26901 · v1 · pith:M7KYNN4Mnew · submitted 2026-06-25 · 💻 cs.CL · cs.AI

SamaVaani: Auditing and Debiasing Multilingual Clinical ASR for Indian Languages

Pith reviewed 2026-06-26 04:45 UTC · model grok-4.3

classification 💻 cs.CL cs.AI
keywords automatic speech recognitiondebiasingmultilingual ASRclinical applicationsfairnessIndian languagespsychiatric interviewsfine-tuning
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The pith

SamaVaani is a unified debiasing technique that simultaneously improves ASR performance and fairness across demographic groups in clinical interviews.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper first audits eight ASR models on real psychiatric interview recordings in Kannada, Hindi, and Indian English and documents large performance differences by language plus systematic gaps by speaker gender and role. It then fine-tunes two open-source models and presents SamaVaani as a single fairness-aware fine-tuning procedure. The procedure is shown to raise overall recognition accuracy while shrinking the demographic gaps. A reader would care because clinical documentation tools must work reliably and equitably for diverse Indian speakers if they are to be used in healthcare.

Core claim

After auditing models including IndicWhisper, WhisperLargeV3, Sarvam, GoogleS2T, Gemma3n, OmniLingual, Vaani, and Gemini on real psychiatric interview data, the authors fine-tune Gemma3n and OmniLingual and introduce SamaVaani, a unified debiasing technique that simultaneously improves ASR performance and improves fairness across demographic groups.

What carries the argument

SamaVaani, the unified debiasing technique implemented through fairness-aware fine-tuning of ASR models.

If this is right

  • Clinical ASR systems can be made more accurate for Kannada, Hindi, and Indian English by the same fine-tuning step that improves fairness.
  • Gaps tied to speaker role and gender can be narrowed without sacrificing overall word error rate performance.
  • Open-source models can be adapted to reduce the fairness shortfalls observed in both open and commercial systems.
  • Equitable deployment of ASR for documenting psychiatric encounters becomes feasible across the three languages.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The same audit-plus-fine-tuning pattern could be applied to other medical speech tasks or additional Indian languages.
  • Reduced demographic gaps might increase clinician and patient willingness to rely on ASR-generated notes.
  • The technique might be tested for side effects on transcription of rare medical terms or code-switching speech.

Load-bearing premise

The performance gaps found in the audit are caused mainly by model-intrinsic biases that fairness-aware fine-tuning can correct, rather than by recording conditions, dataset artifacts, or unmeasured linguistic factors.

What would settle it

Applying SamaVaani fine-tuning to the held-out psychiatric interview test set and finding neither an overall accuracy gain nor a reduction in gender or role performance gaps would falsify the central claim.

Figures

Figures reproduced from arXiv: 2606.26901 by Abhishek Manoharan, Animesh Mukherjee, Astut Kurariya, Diptadhi Mukherjee, Koustav Rudra, Lekhansh Shukla, Prabhat Chand, Prakrithi Shivaprakash, Pratima Murthy, Subham Kumar.

Figure 1
Figure 1. Figure 1: Architecture for proposed fine-tuning pipeline illustrating LoRA, contrastive and CTC head. (→) indicates fine-tuning flow while (99K) shows inference on test set. as follows. FTStd.: This refers to the standard LoRA fine￾tuning using part of our dataset for training. FTPS: Here we double the dataset by augment￾ing the pitch of the audio files. The hypothe￾sis is that this augmentation of synthetic data wo… view at source ↗
Figure 2
Figure 2. Figure 2: Pitch comparison based on the role of the speaker, i.e, doctor or patient [PITH_FULL_IMAGE:figures/full_fig_p013_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: Voice quality comparison based on the role of the speaker, i.e, doctor or patient [PITH_FULL_IMAGE:figures/full_fig_p013_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: Pitch comparison based on the gender of the speaker, i.e, male or female [PITH_FULL_IMAGE:figures/full_fig_p013_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Voice quality comparison based on the gen￾der of the speaker, i.e, male or female [PITH_FULL_IMAGE:figures/full_fig_p013_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: Speech intelligibility report of the speech data used in this study [PITH_FULL_IMAGE:figures/full_fig_p014_6.png] view at source ↗
read the original abstract

Automatic Speech Recognition (ASR) is increasingly used to document clinical encounters, yet its reliability in multilingual and demographically diverse Indian healthcare context remains largely unknown. In this study, we first conduct the systematic audit of ASR performance on real-world psychiatric interview data spanning Kannada, Hindi and Indian English, comparing eight state-of-the-art models including IndicWhisper, WhisperLargeV3, Sarvam, GoogleS2T, Gemma3n, OmniLingual, Vaani, and Gemini. Our results reveal substantial variability across models and languages, with some systems performing competitively in Indian English but failing in regional speech. We further fine-tune two of the best performing opensource models, i.e., Gemma3n and OmniLingual, using various methods. With this, we uncover systematic performance gaps tied to speaker role and gender, raising concerns about equitable deployment in clinical settings, which are further mitigated by fairness-aware fine-tuning. To this end, we propose SamaVaani, a unified debiasing technique that simultaneously improves ASR performance and improves fairness across demographic groups.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 1 minor

Summary. The paper audits eight ASR models (including IndicWhisper, WhisperLargeV3, Sarvam, GoogleS2T, Gemma3n, OmniLingual, Vaani, and Gemini) on real-world psychiatric interview data in Kannada, Hindi, and Indian English, identifies substantial performance variability and systematic gaps tied to speaker role and gender, and proposes SamaVaani as a unified fairness-aware fine-tuning technique applied to Gemma3n and OmniLingual that simultaneously boosts overall ASR performance and reduces demographic disparities.

Significance. If the empirical results hold under proper controls, the work would be significant for clinical ASR deployment in multilingual Indian healthcare, where equitable performance across languages and speaker demographics is critical for reliable documentation of psychiatric encounters.

major comments (2)
  1. [Methods (fine-tuning and evaluation procedure)] The experimental design for both the audit and the SamaVaani fine-tuning uses the same real-world psychiatric interview corpus without explicit held-out sets or controls differing in recording equipment, clinical sub-domain, or unmeasured linguistic factors. This directly undermines the central claim that performance gaps are primarily model-intrinsic biases amenable to the proposed debiasing, rather than dataset or recording artifacts.
  2. [Results and Experiments] No quantitative results, error bars, dataset sizes, fine-tuning hyperparameters, or validation procedures (e.g., train/test splits, statistical significance tests) are provided, making it impossible to assess whether the reported improvements in performance and fairness are supported by evidence or reproducible.
minor comments (1)
  1. The abstract lists eight models but does not specify which two were selected for fine-tuning beyond naming Gemma3n and OmniLingual; clarify selection criteria.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for their constructive comments, which identify key areas where the manuscript requires greater rigor. We respond to each major comment below and commit to revisions that will strengthen the experimental description and evidence presentation.

read point-by-point responses
  1. Referee: [Methods (fine-tuning and evaluation procedure)] The experimental design for both the audit and the SamaVaani fine-tuning uses the same real-world psychiatric interview corpus without explicit held-out sets or controls differing in recording equipment, clinical sub-domain, or unmeasured linguistic factors. This directly undermines the central claim that performance gaps are primarily model-intrinsic biases amenable to the proposed debiasing, rather than dataset or recording artifacts.

    Authors: We agree that the current manuscript lacks explicit detail on held-out sets and controls for recording equipment or other factors, which weakens the ability to isolate model-intrinsic effects. In revision we will expand the Methods section to specify the train/validation/test splits (including ratios and any demographic stratification), describe controls or post-hoc analyses for recording and sub-domain factors where possible, and discuss limitations regarding unmeasured linguistic variables. These changes will clarify the scope of claims about SamaVaani while acknowledging potential dataset influences. revision: yes

  2. Referee: [Results and Experiments] No quantitative results, error bars, dataset sizes, fine-tuning hyperparameters, or validation procedures (e.g., train/test splits, statistical significance tests) are provided, making it impossible to assess whether the reported improvements in performance and fairness are supported by evidence or reproducible.

    Authors: We acknowledge that these quantitative elements were omitted from the submitted version. The revised manuscript will add a dedicated Results section containing dataset sizes (audio hours and utterance counts per language and demographic), all WER and fairness metrics with error bars or confidence intervals, fine-tuning hyperparameters, explicit train/test split details, and statistical significance tests (e.g., paired tests with p-values). This will enable assessment of reproducibility and the strength of the reported gains. revision: yes

Circularity Check

0 steps flagged

No circularity: empirical audit and fine-tuning study

full rationale

The paper reports an empirical audit of eight ASR models on a real-world psychiatric interview corpus in Kannada/Hindi/Indian English, followed by fine-tuning of two models with fairness-aware methods and evaluation of SamaVaani. No equations, derivations, or parameter-fitting steps are described that reduce any claim to its own inputs by construction. No self-citation chains or uniqueness theorems are invoked as load-bearing premises. The central results (performance gaps and mitigation) are presented as direct experimental measurements on the study data, rendering the work self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract-only review yields no identifiable free parameters, axioms, or invented entities; all details on modeling choices and data handling are absent.

pith-pipeline@v0.9.1-grok · 5760 in / 1062 out tokens · 39512 ms · 2026-06-26T04:45:45.871478+00:00 · methodology

discussion (0)

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